389940790 has 16 divisors (see below), whose sum is σ = 702177840. Its totient is φ = 155913120.

The previous prime is 389940763. The next prime is 389940823. The reversal of 389940790 is 97049983.

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, 24241 + ... + 36979.

It is an arithmetic number, because the mean of its divisors is an integer number (43886115).

Almost surely, 2^389940790 is an apocalyptic number.

389940790 is a deficient number, since it is larger than the sum of its proper divisors (312237050).

389940790 is a wasteful number, since it uses less digits than its factorization.

389940790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15807.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 389940790 is about 19746.9184937802. The cubic root of 389940790 is about 730.5773814528.

The spelling of 389940790 in words is "three hundred eighty-nine million, nine hundred forty thousand, seven hundred ninety".