39972544 has 28 divisors (see below), whose sum is σ = 79527400. Its totient is φ = 19934208.

The previous prime is 39972529. The next prime is 39972557. The reversal of 39972544 is 44527993.

It is a self number, because there is not a number n which added to its sum of digits gives 39972544.

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, 39112 + ... + 40120.

Almost surely, 2^39972544 is an apocalyptic number.

It is an amenable number.

39972544 is a deficient number, since it is larger than the sum of its proper divisors (39554856).

39972544 is a wasteful number, since it uses less digits than its factorization.

39972544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640 (or 1630 counting only the distinct ones).

The product of its digits is 272160, while the sum is 43.

The square root of 39972544 is about 6322.3843603501. The cubic root of 39972544 is about 341.9169229259.

The spelling of 39972544 in words is "thirty-nine million, nine hundred seventy-two thousand, five hundred forty-four".