Amazing Number ‘9’

9 9 9 Today the date and time reflected the following:

09:09 09/09/09

This sequence of numbers can only take place once a century (100 years). It is a repetitive sequence of numbers that we have become accustomed to since the dawn of the new millennium, in the year 2000.

Personally, I have a total of nine letters in my name and surname: Hans Haupt. Coincidentally, my astrological lucky numbers are meant to be both five and nine and I was born on a Wednesday, which is meant to be my lucky day.

As it so happens, the word September and the day Wednesday are each made up of nine letters. Furthermore, today is the 252nd day of the year, thus 2+5+2 = 9. Amazing, don’t you think?

To celebrate this date, I have scoured the internet for nine interesting facts relating to the number nine.

  1. Cats are said to have nine lives.
  2. If you multiply nine by any whole number (except zero), and repeatedly add the digits of the answer until it’s just one digit, you will end up with nine. For example:
    3 × 9 = 27 (2 + 7 = 9)
    9 × 9 = 81 (8 + 1 = 9)
    121 × 9 = 1089 (1 + 0 + 8 + 9 = 18; 1 + 8 = 9)
    234 × 9 = 2106 (2 + 1 + 0 + 6 = 9)
  3. There are nine members of the Fellowship of the Ring in The Lord of the Rings saga, to balance and combat the nine Nazgûl.
  4. Water expands by about 9% as it freezes.
  5. The nine times tables are the only ones which can be done using just ones fingers. For example, if you wanted to calculate what 9 x 7 is, you would extend all ten fingers, then from the pinky on the left hand to the pinky on the right hand, count out seven fingers (the number being multiplied by nine). When you get to the seventh finger (which should be your index finger/pointing finger), bend your finger. The remaining fingers will give you the answer, which is 63 (six fingers remain before the bent finger and three fingers remain after).
  6. Nine is strongly associated with the Chinese dragon, a symbol of magic and power. There are nine forms of the dragon, it is described in terms of nine attributes, and it has nine children.
  7. Bart Simpson has nine spikes of hair (since the second season of The Simpsons).
  8. There are nine planets in our solar system (although this is now debatable).
  9. Nine months is the average gestational period for human babies to develop to full term.

If anyone else has any interesting facts pertaining to the ‘amazing number nine’, please do leave a comment.

Until the next time “Milieunairs”!

Bookmark and Share

Happy ‘Zeroless Pandigital’ day?!

Today we will all be fortunate enough to experience a ‘once in a lifetime event’. At one point today, around midday, clocks and calendars will give a combined consecutive numerical reading of 12:34:56 07/08/09 – Which is believed to only occur once every 100 years.

Thus, at 34 minutes and 56 seconds past 12:00 hours (12 pm), on Friday the 7th of August 2009, we will experience a centennial moment in time in which the first zeroless pandigital number can be used to precisely pinpoint the exact date and time.

In layman’s terms: all nine numerical digits, which hold a value greater than zero and which make up all arithmetic equations, will present themselves at a single point in time, in numerical order from smallest to largest, via the most well known sequence of numbers in existence: 123456789.

12:34:56  07/08/09

12:34:56 07/08/09 = 123456789

Personally I find this to be incredibly interesting. Particularly because I do have an inclination and mild obsession with numerical sequences and geometric symmetry. Consequently, I found a few interesting facts and figures concerning this first zeroless pandigital numbered sequence. For those who do not know, a pandigital number is in fact “an integer that in a given base, has among its significant digits, each digit used in the base at least once” (, 2009).

In most instances, the number ‘777’ is considered to be one of luck. It is also considered to be a symbol of absolute perfection. As it so happens, this number has an evenly symmetrical number of solutions, in both descending and ascending order, using the numbers 123456789 and by only ‘adding’ and ‘subtracting’. The solutions are (Martin Gardner, 02 June 2009):

Ascending                                                          Descending

– 12 – 3 + 4 + 5 – 6 + 789 = 777              – 9 – 8 + 765 – 4 + 32 + 1 = 777

– 12 + 3 – 4 – 5 + 6 + 789 = 777               98 + 7 + 654 – 3 + 21 = 777

Have you ever wondered what it would look like to display all the numbers from 1 through to 9 on an abacus? Well, here is your answer:

How the Chinese represent 123456789 with an Abacus!

How about displaying this ascending zeroless pandigital sequence in Roman numerals? Here we go:


Here are a few interesting facts relating to numbers 1 through 9 courtesy of Richard Phillips’ book ‘Numbers’:

  1. The letters A, B, C, D, E, M, T, U, V, W and Y all have one line of symmetry.

  2. The number 2 is a prime number and is the only even prime number.

  3. There are three barleycorns in an inch, three feet in a yard, and three miles in a league.

  4. The word four has four letters. In the English language there is no other number whose number of letters is equal to its value.

  5. TetronimoThere are only five possible tetrominoes. A tetromino is a shape made by joining together four squares. The game Tetris is based on the assembly of tetrominoes.

  6. There are six feet in a fathom. A fathom is a unit of length used mainly by sailors. It equals 1.8288 metres.

  7. The Seven Deadly Sins are avarice, envy, gluttony, lust, pride, sloth and wrath (listed in alphabetical order).

  8. In the game of pool the Eight Ball is a black ball with the number 8. The expression `behind the eight ball’ means to be in a difficult or baffling situation.

  9. There are nine major planets in the solar system, Beethoven wrote nine symphonies, and a cat is said to have nine lives.

I wish you all a very numerically filled and happy zeroless pandigital day!

Until the next time “Milieunairs”!


Bookmark and Share