389665432 has 32 divisors (see below), whose sum is σ = 833112000. Its totient is φ = 169265664.

The previous prime is 389665427. The next prime is 389665453. The reversal of 389665432 is 234566983.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108432 + ... + 111967.

It is an arithmetic number, because the mean of its divisors is an integer number (26034750).

Almost surely, 2^389665432 is an apocalyptic number.

It is an amenable number.

389665432 is an abundant number, since it is smaller than the sum of its proper divisors (443446568).

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

389665432 is a wasteful number, since it uses less digits than its factorization.

389665432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220435 (or 220431 counting only the distinct ones).

The product of its digits is 933120, while the sum is 46.

The square root of 389665432 is about 19739.9450860432. The cubic root of 389665432 is about 730.4053744006.

The spelling of 389665432 in words is "three hundred eighty-nine million, six hundred sixty-five thousand, four hundred thirty-two".