39394021024 has 12 divisors (see below), whose sum is σ = 77556978954. Its totient is φ = 19697010496.

The previous prime is 39394021019. The next prime is 39394021039. The reversal of 39394021024 is 42012049393.

It can be written as a sum of positive squares in only one way, i.e., 31847971600 + 7546049424 = 178460^2 + 86868^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615531547 + ... + 615531610.

Almost surely, 2^39394021024 is an apocalyptic number.

It is an amenable number.

39394021024 is a deficient number, since it is larger than the sum of its proper divisors (38162957930).

39394021024 is a wasteful number, since it uses less digits than its factorization.

39394021024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231063167 (or 1231063159 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The spelling of 39394021024 in words is "thirty-nine billion, three hundred ninety-four million, twenty-one thousand, twenty-four".