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

Rare Properties of 9

Narcissistic
Square

Common Properties of 9

Composite
Deficient
Evil
Lucky
Odd
Palindrome
Powerful