39945392 has 10 divisors (see below), whose sum is σ = 77394228. Its totient is φ = 19972688.

The previous prime is 39945349. The next prime is 39945397. The reversal of 39945392 is 29354993.

It is not an unprimeable number, because it can be changed into a prime (39945397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1248278 + ... + 1248309.

Almost surely, 2^39945392 is an apocalyptic number.

It is an amenable number.

39945392 is a deficient number, since it is larger than the sum of its proper divisors (37448836).

39945392 is a wasteful number, since it uses less digits than its factorization.

39945392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496595 (or 2496589 counting only the distinct ones).

The product of its digits is 262440, while the sum is 44.

The square root of 39945392 is about 6320.2367044281. The cubic root of 39945392 is about 341.8394878484.

The spelling of 39945392 in words is "thirty-nine million, nine hundred forty-five thousand, three hundred ninety-two".