389589136 has 20 divisors (see below), whose sum is σ = 799231212. Its totient is φ = 183335936.

The previous prime is 389589131. The next prime is 389589149. The reversal of 389589136 is 631985983.

It can be written as a sum of positive squares in 2 ways, for example, as 347598736 + 41990400 = 18644^2 + 6480^2 .

It is not an unprimeable number, because it can be changed into a prime (389589131) 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, 715885 + ... + 716428.

Almost surely, 2^389589136 is an apocalyptic number.

It is an amenable number.

389589136 is an abundant number, since it is smaller than the sum of its proper divisors (409642076).

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

389589136 is a wasteful number, since it uses less digits than its factorization.

389589136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432338 (or 1432332 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 52.

The square root of 389589136 is about 19738.0124632649. The cubic root of 389589136 is about 730.3577004720.

The spelling of 389589136 in words is "three hundred eighty-nine million, five hundred eighty-nine thousand, one hundred thirty-six".