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 14

  • 14 is the largest number for which there are as many composite numbers less than it as there are primes
  • 14 is the lowest even n for which the equation φ(x) = n has no solution, making it the first even nontotient
  • 14 is the smallest positive integer n such that n and 2n end with the same digit

Rare Properties of 14

Catalan

Common Properties of 14

Composite
Deficient
Even
Odious
Square-free