389738856 has 32 divisors (see below), whose sum is σ = 1049297760. Its totient is φ = 119919552.

The previous prime is 389738819. The next prime is 389738863. The reversal of 389738856 is 658837983.

It is a junction number, because it is equal to n+sod(n) for n = 389738796 and 389738805.

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, 624270 + ... + 624893.

It is an arithmetic number, because the mean of its divisors is an integer number (32790555).

Almost surely, 2^389738856 is an apocalyptic number.

It is an amenable number.

389738856 is an abundant number, since it is smaller than the sum of its proper divisors (659558904).

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

389738856 is a wasteful number, since it uses less digits than its factorization.

389738856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249185 (or 1249181 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 57.

The square root of 389738856 is about 19741.8047807185. The cubic root of 389738856 is about 730.4512478702.

The spelling of 389738856 in words is "three hundred eighty-nine million, seven hundred thirty-eight thousand, eight hundred fifty-six".