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 404

  • 404 is the HTTP status code for "file not found", perhaps the most famous HTTP status code of all
  • 405 is the smallest composite number that is the sum of two, three, four, and five consecutive composite numbers (405 = 202 + 203 = 134 + 135 + 136 = 99 + 100 + 102 + 104 = 78 + 80 + 81 + 82 + 84)
  • 405 is the smallest number with 10 odd divisors

Common Properties of 404

Composite
Deficient
Even
Evil
Happy
Palindrome
Undulating