389428232 has 12 divisors (see below), whose sum is σ = 730282605. Its totient is φ = 194686208.

The previous prime is 389428213. The next prime is 389428243. The reversal of 389428232 is 232824983.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 349914436 + 39513796 = 18706^2 + 6286^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=13954.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 389428232.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 52328 + ... + 59304.

Almost surely, 2^389428232 is an apocalyptic number.

It is an amenable number.

389428232 is a deficient number, since it is larger than the sum of its proper divisors (340854373).

389428232 is an frugal number, since it uses more digits than its factorization.

389428232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13960 (or 6979 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 389428232 is about 19733.9360493542. The cubic root of 389428232 is about 730.2571384124.

Multiplying 389428232 by its product of digits (165888), we get a square (64601470550016 = 8037504²).

It can be divided in two parts, 38942 and 8232, that added together give a palindrome (47174).

The spelling of 389428232 in words is "three hundred eighty-nine million, four hundred twenty-eight thousand, two hundred thirty-two".