389129924 has 12 divisors (see below), whose sum is σ = 683402748. Its totient is φ = 193872000.

The previous prime is 389129921. The next prime is 389129929. The reversal of 389129924 is 429921983.

It can be written as a sum of positive squares in 2 ways, for example, as 308704900 + 80425024 = 17570^2 + 8968^2 .

It is not an unprimeable number, because it can be changed into a prime (389129921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171977 + ... + 174224.

It is an arithmetic number, because the mean of its divisors is an integer number (56950229).

Almost surely, 2^389129924 is an apocalyptic number.

It is an amenable number.

389129924 is a deficient number, since it is larger than the sum of its proper divisors (294272824).

389129924 is a wasteful number, since it uses less digits than its factorization.

389129924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346486 (or 346484 counting only the distinct ones).

The product of its digits is 279936, while the sum is 47.

The square root of 389129924 is about 19726.3763524881. The cubic root of 389129924 is about 730.0706280573.

The spelling of 389129924 in words is "three hundred eighty-nine million, one hundred twenty-nine thousand, nine hundred twenty-four".