389684886 has 12 divisors (see below), whose sum is σ = 779466492. Its totient is φ = 129878844.

The previous prime is 389684879. The next prime is 389684891. The reversal of 389684886 is 688486983.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44325 + ... + 52383.

It is an arithmetic number, because the mean of its divisors is an integer number (64955541).

Almost surely, 2^389684886 is an apocalyptic number.

389684886 is an abundant number, since it is smaller than the sum of its proper divisors (389781606).

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

389684886 is an frugal number, since it uses more digits than its factorization.

389684886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16123 (or 8064 counting only the distinct ones).

The product of its digits is 15925248, while the sum is 60.

The square root of 389684886 is about 19740.4378370896. The cubic root of 389684886 is about 730.4175293319.

The spelling of 389684886 in words is "three hundred eighty-nine million, six hundred eighty-four thousand, eight hundred eighty-six".