389129432 has 8 divisors (see below), whose sum is σ = 729617700. Its totient is φ = 194564712.

The previous prime is 389129423. The next prime is 389129441. The reversal of 389129432 is 234921983.

It is an interprime number because it is at equal distance from previous prime (389129423) and next prime (389129441).

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 389129432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24320582 + ... + 24320597.

Almost surely, 2^389129432 is an apocalyptic number.

It is an amenable number.

389129432 is a deficient number, since it is larger than the sum of its proper divisors (340488268).

389129432 is a wasteful number, since it uses less digits than its factorization.

389129432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48641185 (or 48641181 counting only the distinct ones).

The product of its digits is 93312, while the sum is 41.

The square root of 389129432 is about 19726.3638818714. The cubic root of 389129432 is about 730.0703203667.

The spelling of 389129432 in words is "three hundred eighty-nine million, one hundred twenty-nine thousand, four hundred thirty-two".