39872912 has 20 divisors (see below), whose sum is σ = 79918620. Its totient is φ = 19248768.

The previous prime is 39872879. The next prime is 39872923. The reversal of 39872912 is 21927893.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23193856 + 16679056 = 4816^2 + 4084^2 .

It is a super-2 number, since 2×39872912² = 3179698222719488, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 39872912.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42503 + ... + 43430.

It is an arithmetic number, because the mean of its divisors is an integer number (3995931).

Almost surely, 2^39872912 is an apocalyptic number.

It is an amenable number.

39872912 is an abundant number, since it is smaller than the sum of its proper divisors (40045708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39872912 is a wasteful number, since it uses less digits than its factorization.

39872912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85970 (or 85964 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 39872912 is about 6314.5001385700. The cubic root of 39872912 is about 341.6326093622.

The spelling of 39872912 in words is "thirty-nine million, eight hundred seventy-two thousand, nine hundred twelve".