39916435842 has 12 divisors (see below), whose sum is σ = 86485611030. Its totient is φ = 13305478608.

The previous prime is 39916435787. The next prime is 39916435859. The reversal of 39916435842 is 24853461993.

39916435842 is a `hidden beast` number, since 3 + 9 + 9 + 16 + 43 + 584 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 29784201561 + 10132234281 = 172581^2 + 100659^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1108789867 + ... + 1108789902.

Almost surely, 2^39916435842 is an apocalyptic number.

39916435842 is an abundant number, since it is smaller than the sum of its proper divisors (46569175188).

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

39916435842 is a wasteful number, since it uses less digits than its factorization.

39916435842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217579777 (or 2217579774 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The spelling of 39916435842 in words is "thirty-nine billion, nine hundred sixteen million, four hundred thirty-five thousand, eight hundred forty-two".