389988064 has 24 divisors (see below), whose sum is σ = 786518208. Its totient is φ = 190237440.

The previous prime is 389988059. The next prime is 389988073. The reversal of 389988064 is 460889983.

It is a junction number, because it is equal to n+sod(n) for n = 389987996 and 389988014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147312 + ... + 149935.

It is an arithmetic number, because the mean of its divisors is an integer number (32771592).

Almost surely, 2^389988064 is an apocalyptic number.

It is an amenable number.

389988064 is an abundant number, since it is smaller than the sum of its proper divisors (396530144).

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

389988064 is a wasteful number, since it uses less digits than its factorization.

389988064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297298 (or 297290 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 55.

The square root of 389988064 is about 19748.1154543921. The cubic root of 389988064 is about 730.6069038149.

The spelling of 389988064 in words is "three hundred eighty-nine million, nine hundred eighty-eight thousand, sixty-four".