389155916 has 12 divisors (see below), whose sum is σ = 682503360. Its totient is φ = 194154960.

The previous prime is 389155913. The next prime is 389155931. The reversal of 389155916 is 619551983.

It is not an unprimeable number, because it can be changed into a prime (389155913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103676 + ... + 107363.

It is an arithmetic number, because the mean of its divisors is an integer number (56875280).

Almost surely, 2^389155916 is an apocalyptic number.

It is an amenable number.

389155916 is a deficient number, since it is larger than the sum of its proper divisors (293347444).

389155916 is a wasteful number, since it uses less digits than its factorization.

389155916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211504 (or 211502 counting only the distinct ones).

The product of its digits is 291600, while the sum is 47.

The square root of 389155916 is about 19727.0351548326. The cubic root of 389155916 is about 730.0868827597.

The spelling of 389155916 in words is "three hundred eighty-nine million, one hundred fifty-five thousand, nine hundred sixteen".