389372904 has 48 divisors (see below), whose sum is σ = 1083060420. Its totient is φ = 126282240.

The previous prime is 389372903. The next prime is 389372969. The reversal of 389372904 is 409273983.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 342176004 + 47196900 = 18498^2 + 6870^2 .

It is a super-2 number, since 2×389372904² = 303222516738786432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 389372904.

It is not an unprimeable number, because it can be changed into a prime (389372903) 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, 70417 + ... + 75744.

Almost surely, 2^389372904 is an apocalyptic number.

It is an amenable number.

389372904 is an abundant number, since it is smaller than the sum of its proper divisors (693687516).

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

389372904 is a wasteful number, since it uses less digits than its factorization.

389372904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146210 (or 146203 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 389372904 is about 19732.5341504836. The cubic root of 389372904 is about 730.2225530235. Note that the first 3 decimals are identical.

The spelling of 389372904 in words is "three hundred eighty-nine million, three hundred seventy-two thousand, nine hundred four".