39135864 has 32 divisors (see below), whose sum is σ = 98017920. Its totient is φ = 13021536.

The previous prime is 39135841. The next prime is 39135883. The reversal of 39135864 is 46853193.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16327 + ... + 18569.

It is an arithmetic number, because the mean of its divisors is an integer number (3063060).

Almost surely, 2^39135864 is an apocalyptic number.

It is an amenable number.

39135864 is an abundant number, since it is smaller than the sum of its proper divisors (58882056).

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

39135864 is a wasteful number, since it uses less digits than its factorization.

39135864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2979 (or 2975 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 39135864 is about 6255.8663668592. The cubic root of 39135864 is about 339.5144858014.

The spelling of 39135864 in words is "thirty-nine million, one hundred thirty-five thousand, eight hundred sixty-four".