447279938 has 24 divisors (see below), whose sum is σ = 793262844. Its totient is φ = 188546400.

The previous prime is 447279883. The next prime is 447279949. The reversal of 447279938 is 839972744.

It can be written as a sum of positive squares in 2 ways, for example, as 401080729 + 46199209 = 20027^2 + 6797^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 447279938.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31433 + ... + 43388.

Almost surely, 2^447279938 is an apocalyptic number.

447279938 is a deficient number, since it is larger than the sum of its proper divisors (345982906).

447279938 is a wasteful number, since it uses less digits than its factorization.

447279938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74898 (or 74891 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 53.

The square root of 447279938 is about 21148.9937822110. The cubic root of 447279938 is about 764.7623041551.

The spelling of 447279938 in words is "four hundred forty-seven million, two hundred seventy-nine thousand, nine hundred thirty-eight".