389391232 has 32 divisors (see below), whose sum is σ = 777362400. Its totient is φ = 194288640.

The previous prime is 389391229. The next prime is 389391251. The reversal of 389391232 is 232193983.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63769 + ... + 69607.

It is an arithmetic number, because the mean of its divisors is an integer number (24292575).

Almost surely, 2^389391232 is an apocalyptic number.

389391232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

389391232 is a deficient number, since it is larger than the sum of its proper divisors (387971168).

389391232 is an equidigital number, since it uses as much as digits as its factorization.

389391232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6374 (or 6362 counting only the distinct ones).

The product of its digits is 69984, while the sum is 40.

The square root of 389391232 is about 19732.9985557188. The cubic root of 389391232 is about 730.2340101715.

The spelling of 389391232 in words is "three hundred eighty-nine million, three hundred ninety-one thousand, two hundred thirty-two".