# 449

This number is a prime.

The smallest prime number whose individual digits are composite perfect squares. [Thoms]

The smallest prime number that can be constructed by two concatenated perfect prime squares (2^{2} and 7^{2}). [Wagler]

449 is the 87th prime. Note that 4^{2} +
4^{2} + 9^{2} = 8^{2} +
7^{2}. [Punches]

The smallest prime whose digits are all semiprimes. [Silva]

Smallest zeroless prime whose every power contain the digit zero in it. [Gupta]

The 449 Club (or Club 449) takes its name from page 449 of the first few editions of *Alcoholics Anonymous* or "The Big Book" as it is affectionately known by members. A familiar and oft quoted passage there concerns the notion of acceptance as the key to happiness. [Green]

The smallest of only two 3-digit composite-digit primes. The other is 499. [Loungrides]

The smallest prime formed from the concatention of semiprimes in two ways {4, 4, 9} and {4, 49}. [Silva]