39389872 has 20 divisors (see below), whose sum is σ = 76501800. Its totient is φ = 19647488.

The previous prime is 39389843. The next prime is 39389873. The reversal of 39389872 is 27898393.

It is not an unprimeable number, because it can be changed into a prime (39389873) 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, 4443 + ... + 9925.

It is an arithmetic number, because the mean of its divisors is an integer number (3825090).

Almost surely, 2^39389872 is an apocalyptic number.

It is an amenable number.

39389872 is a deficient number, since it is larger than the sum of its proper divisors (37111928).

39389872 is a wasteful number, since it uses less digits than its factorization.

39389872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5940 (or 5934 counting only the distinct ones).

The product of its digits is 653184, while the sum is 49.

The square root of 39389872 is about 6276.1351164550. The cubic root of 39389872 is about 340.2474323461.

The spelling of 39389872 in words is "thirty-nine million, three hundred eighty-nine thousand, eight hundred seventy-two".