389870924 has 12 divisors (see below), whose sum is σ = 700714224. Its totient is φ = 189666864.

The previous prime is 389870917. The next prime is 389870933. The reversal of 389870924 is 429078983.

It is a happy number.

It is a super-2 number, since 2×389870924² = 303998674761227552, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1316984 + ... + 1317279.

It is an arithmetic number, because the mean of its divisors is an integer number (58392852).

Almost surely, 2^389870924 is an apocalyptic number.

It is an amenable number.

389870924 is a deficient number, since it is larger than the sum of its proper divisors (310843300).

389870924 is a wasteful number, since it uses less digits than its factorization.

389870924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634304 (or 2634302 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 389870924 is about 19745.1493790247. The cubic root of 389870924 is about 730.5337461374.

The spelling of 389870924 in words is "three hundred eighty-nine million, eight hundred seventy thousand, nine hundred twenty-four".