389009850 has 24 divisors (see below), whose sum is σ = 964744800. Its totient is φ = 103735920.

The previous prime is 389009821. The next prime is 389009869. The reversal of 389009850 is 58900983.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1296550 + ... + 1296849.

It is an arithmetic number, because the mean of its divisors is an integer number (40197700).

Almost surely, 2^389009850 is an apocalyptic number.

389009850 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

389009850 is an abundant number, since it is smaller than the sum of its proper divisors (575734950).

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

389009850 is a wasteful number, since it uses less digits than its factorization.

389009850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2593414 (or 2593409 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 389009850 is about 19723.3326291476. The cubic root of 389009850 is about 729.9955275888.

The spelling of 389009850 in words is "three hundred eighty-nine million, nine thousand, eight hundred fifty".