389679920 has 80 divisors (see below), whose sum is σ = 1068883968. Its totient is φ = 129288960.

The previous prime is 389679907. The next prime is 389679947. The reversal of 389679920 is 29976983.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6137 + ... + 28583.

Almost surely, 2^389679920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389679920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (534441984).

389679920 is an abundant number, since it is smaller than the sum of its proper divisors (679204048).

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

389679920 is a wasteful number, since it uses less digits than its factorization.

389679920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22498 (or 22492 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 53.

The square root of 389679920 is about 19740.3120542711. The cubic root of 389679920 is about 730.4144265951.

The spelling of 389679920 in words is "three hundred eighty-nine million, six hundred seventy-nine thousand, nine hundred twenty".