389573920 has 24 divisors (see below), whose sum is σ = 920368764. Its totient is φ = 155829504.

The previous prime is 389573909. The next prime is 389573927. The reversal of 389573920 is 29375983.

It can be written as a sum of positive squares in 2 ways, for example, as 359936784 + 29637136 = 18972^2 + 5444^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (389573927) by changing a digit.

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, 1217259 + ... + 1217578.

Almost surely, 2^389573920 is an apocalyptic number.

It is an amenable number.

389573920 is an abundant number, since it is smaller than the sum of its proper divisors (530794844).

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

389573920 is a wasteful number, since it uses less digits than its factorization.

389573920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434852 (or 2434844 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 389573920 is about 19737.6270103577. The cubic root of 389573920 is about 730.3481919356.

It can be divided in two parts, 3895 and 73920, that added together give a triangular number (77815 = T₃₉₄).

The spelling of 389573920 in words is "three hundred eighty-nine million, five hundred seventy-three thousand, nine hundred twenty".