393385992 has 16 divisors (see below), whose sum is σ = 983465040. Its totient is φ = 131128656.

The previous prime is 393385931. The next prime is 393386003. The reversal of 393385992 is 299583393.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8195518 + ... + 8195565.

It is an arithmetic number, because the mean of its divisors is an integer number (61466565).

Almost surely, 2^393385992 is an apocalyptic number.

It is an amenable number.

393385992 is an abundant number, since it is smaller than the sum of its proper divisors (590079048).

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

393385992 is a wasteful number, since it uses less digits than its factorization.

393385992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16391092 (or 16391088 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 51.

The square root of 393385992 is about 19833.9605727147. The cubic root of 393385992 is about 732.7226730839.

The spelling of 393385992 in words is "three hundred ninety-three million, three hundred eighty-five thousand, nine hundred ninety-two".