39972488 has 16 divisors (see below), whose sum is σ = 75540480. Its totient is φ = 19828368.

The previous prime is 39972487. The next prime is 39972497. The reversal of 39972488 is 88427993.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (39972487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18656 + ... + 20687.

It is an arithmetic number, because the mean of its divisors is an integer number (4721280).

Almost surely, 2^39972488 is an apocalyptic number.

It is an amenable number.

39972488 is a deficient number, since it is larger than the sum of its proper divisors (35567992).

39972488 is a wasteful number, since it uses less digits than its factorization.

39972488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39476 (or 39472 counting only the distinct ones).

The product of its digits is 870912, while the sum is 50.

The square root of 39972488 is about 6322.3799316397. The cubic root of 39972488 is about 341.9167632550.

The spelling of 39972488 in words is "thirty-nine million, nine hundred seventy-two thousand, four hundred eighty-eight".