389987304 has 32 divisors (see below), whose sum is σ = 1114249920. Its totient is φ = 111424896.

The previous prime is 389987281. The next prime is 389987317. The reversal of 389987304 is 403789983.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1160509 + ... + 1160844.

It is an arithmetic number, because the mean of its divisors is an integer number (34820310).

Almost surely, 2^389987304 is an apocalyptic number.

It is an amenable number.

389987304 is an abundant number, since it is smaller than the sum of its proper divisors (724262616).

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

389987304 is a wasteful number, since it uses less digits than its factorization.

389987304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2321369 (or 2321365 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 389987304 is about 19748.0962120403. The cubic root of 389987304 is about 730.6064292178.

The spelling of 389987304 in words is "three hundred eighty-nine million, nine hundred eighty-seven thousand, three hundred four".