389633992 has 16 divisors (see below), whose sum is σ = 796978800. Its totient is φ = 177106320.

The previous prime is 389633989. The next prime is 389634019. The reversal of 389633992 is 299336983.

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, 2213742 + ... + 2213917.

It is an arithmetic number, because the mean of its divisors is an integer number (49811175).

Almost surely, 2^389633992 is an apocalyptic number.

It is an amenable number.

389633992 is an abundant number, since it is smaller than the sum of its proper divisors (407344808).

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

389633992 is a wasteful number, since it uses less digits than its factorization.

389633992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4427676 (or 4427672 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 52.

The square root of 389633992 is about 19739.1487151802. The cubic root of 389633992 is about 730.3857297168.

It can be divided in two parts, 389633 and 992, that added together give a 8-th power (390625 = 5⁸).

The spelling of 389633992 in words is "three hundred eighty-nine million, six hundred thirty-three thousand, nine hundred ninety-two".