39940685376 has 56 divisors (see below), whose sum is σ = 106229773824. Its totient is φ = 13243845120.

The previous prime is 39940685357. The next prime is 39940685381. The reversal of 39940685376 is 67358604993.

It is a super-2 number, since 2×39940685376² (a number of 22 digits) contains 22 as substring.

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, 507895 + ... + 581238.

Almost surely, 2^39940685376 is an apocalyptic number.

It is an amenable number.

39940685376 is an abundant number, since it is smaller than the sum of its proper divisors (66289088448).

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

39940685376 is a wasteful number, since it uses less digits than its factorization.

39940685376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089339 (or 1089329 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 60.

The spelling of 39940685376 in words is "thirty-nine billion, nine hundred forty million, six hundred eighty-five thousand, three hundred seventy-six".