389959128 has 48 divisors (see below), whose sum is σ = 1137383520. Its totient is φ = 119987136.

The previous prime is 389959123. The next prime is 389959139. The reversal of 389959128 is 821959983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389959121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 207376 + ... + 209247.

It is an arithmetic number, because the mean of its divisors is an integer number (23695490).

Almost surely, 2^389959128 is an apocalyptic number.

It is an amenable number.

389959128 is an abundant number, since it is smaller than the sum of its proper divisors (747424392).

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

389959128 is a wasteful number, since it uses less digits than its factorization.

389959128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416648 (or 416641 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 54.

The square root of 389959128 is about 19747.3828139326. The cubic root of 389959128 is about 730.5888337197.

The spelling of 389959128 in words is "three hundred eighty-nine million, nine hundred fifty-nine thousand, one hundred twenty-eight".