389976128 has 28 divisors (see below), whose sum is σ = 781385280. Its totient is φ = 193091712.

The previous prime is 389976101. The next prime is 389976149. The reversal of 389976128 is 821679983.

It is a self number, because there is not a number n which added to its sum of digits gives 389976128.

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, 22988 + ... + 36171.

Almost surely, 2^389976128 is an apocalyptic number.

It is an amenable number.

389976128 is an abundant number, since it is smaller than the sum of its proper divisors (391409152).

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

389976128 is a wasteful number, since it uses less digits than its factorization.

389976128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59274 (or 59264 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 53.

The square root of 389976128 is about 19747.8132460280. The cubic root of 389976128 is about 730.5994500714.

The spelling of 389976128 in words is "three hundred eighty-nine million, nine hundred seventy-six thousand, one hundred twenty-eight".