39860091972 has 72 divisors (see below), whose sum is σ = 101225884032. Its totient is φ = 13225080000.

The previous prime is 39860091923. The next prime is 39860092003. The reversal of 39860091972 is 27919006893.

39860091972 is a `hidden beast` number, since 398 + 60 + 0 + 9 + 197 + 2 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7243222 + ... + 7248722.

It is an arithmetic number, because the mean of its divisors is an integer number (1405915056).

Almost surely, 2^39860091972 is an apocalyptic number.

It is an amenable number.

39860091972 is an abundant number, since it is smaller than the sum of its proper divisors (61365792060).

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

39860091972 is a wasteful number, since it uses less digits than its factorization.

39860091972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6409 (or 6404 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The spelling of 39860091972 in words is "thirty-nine billion, eight hundred sixty million, ninety-one thousand, nine hundred seventy-two".