Number Gossip
(Enter a number and I'll tell you everything you wanted to know about it but were afraid to ask.)
Unique Properties of 9
- 9 is the smallest odd composite number
- 9 is the maximum number of cubes that are needed to sum to any positive integer
- There are 9 members of The Fellowship of the Ring
- 9 is the only number (except one) which is equal to the sum of the digits of its square
- 9 is the only non-trivial square consisting of only odd digits
- 9 is the smallest number of distinct integer-sided squares needed to tile a rectangle
- 9 is the smallest odd number such that no odd Fibonacci number is divisible by it