39907970216 has 32 divisors (see below), whose sum is σ = 77436081000. Its totient is φ = 19258853376.

The previous prime is 39907970209. The next prime is 39907970273. The reversal of 39907970216 is 61207970993.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24290469316 + 15617500900 = 155854^2 + 124970^2 .

It is a super-2 number, since 2×39907970216² (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, 632720 + ... + 692928.

Almost surely, 2^39907970216 is an apocalyptic number.

It is an amenable number.

39907970216 is a deficient number, since it is larger than the sum of its proper divisors (37528110784).

39907970216 is a wasteful number, since it uses less digits than its factorization.

39907970216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63101 (or 63097 counting only the distinct ones).

The product of its (nonzero) digits is 1285956, while the sum is 53.

The spelling of 39907970216 in words is "thirty-nine billion, nine hundred seven million, nine hundred seventy thousand, two hundred sixteen".