389621232 has 640 divisors, whose sum is σ = 1619896320. Its totient is φ = 86261760.

The previous prime is 389621231. The next prime is 389621251. The reversal of 389621232 is 232126983.

389621232 is a `hidden beast` number, since 3 + 8 + 9 + 621 + 23 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389621231) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7351318 + ... + 7351370.

It is an arithmetic number, because the mean of its divisors is an integer number (2531088).

Almost surely, 2^389621232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389621232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (809948160).

389621232 is an abundant number, since it is smaller than the sum of its proper divisors (1230275088).

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

389621232 is a wasteful number, since it uses less digits than its factorization.

389621232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 106 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 389621232 is about 19738.8254969742. The cubic root of 389621232 is about 730.3777565729.

The spelling of 389621232 in words is "three hundred eighty-nine million, six hundred twenty-one thousand, two hundred thirty-two".