389399192 has 32 divisors (see below), whose sum is σ = 898615200. Its totient is φ = 154047744.

The previous prime is 389399123. The next prime is 389399201. The reversal of 389399192 is 291993983.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266717 + ... + 268172.

It is an arithmetic number, because the mean of its divisors is an integer number (28081725).

Almost surely, 2^389399192 is an apocalyptic number.

It is an amenable number.

389399192 is an abundant number, since it is smaller than the sum of its proper divisors (509216008).

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

389399192 is a wasteful number, since it uses less digits than its factorization.

389399192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534915 (or 534911 counting only the distinct ones).

The product of its digits is 944784, while the sum is 53.

The square root of 389399192 is about 19733.2002472990. The cubic root of 389399192 is about 730.2389859924.

The spelling of 389399192 in words is "three hundred eighty-nine million, three hundred ninety-nine thousand, one hundred ninety-two".