389888756 has 24 divisors (see below), whose sum is σ = 695520000. Its totient is φ = 191184704.

The previous prime is 389888743. The next prime is 389888773. The reversal of 389888756 is 657888983.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111320 + ... + 114768.

It is an arithmetic number, because the mean of its divisors is an integer number (28980000).

Almost surely, 2^389888756 is an apocalyptic number.

It is an amenable number.

389888756 is a deficient number, since it is larger than the sum of its proper divisors (305631244).

389888756 is a wasteful number, since it uses less digits than its factorization.

389888756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3991 (or 3989 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 62.

The square root of 389888756 is about 19745.6009278016. The cubic root of 389888756 is about 730.5448837374.

The spelling of 389888756 in words is "three hundred eighty-nine million, eight hundred eighty-eight thousand, seven hundred fifty-six".