39493600978 has 32 divisors (see below), whose sum is σ = 66587826816. Its totient is φ = 17430935808.

The previous prime is 39493600969. The next prime is 39493601023. The reversal of 39493600978 is 87900639493.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4023825 + ... + 4033627.

It is an arithmetic number, because the mean of its divisors is an integer number (2080869588).

Almost surely, 2^39493600978 is an apocalyptic number.

39493600978 is a deficient number, since it is larger than the sum of its proper divisors (27094225838).

39493600978 is a wasteful number, since it uses less digits than its factorization.

39493600978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16578.

The product of its (nonzero) digits is 8817984, while the sum is 58.

The spelling of 39493600978 in words is "thirty-nine billion, four hundred ninety-three million, six hundred thousand, nine hundred seventy-eight".