389722992 has 80 divisors (see below), whose sum is σ = 1031184000. Its totient is φ = 126786816.

The previous prime is 389722973. The next prime is 389723021. The reversal of 389722992 is 299227983.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

Its product of digits (979776) is a multiple of the sum of its prime divisors (864).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 780759 + ... + 781257.

It is an arithmetic number, because the mean of its divisors is an integer number (12889800).

Almost surely, 2^389722992 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 389722992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515592000).

389722992 is an abundant number, since it is smaller than the sum of its proper divisors (641461008).

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

389722992 is a wasteful number, since it uses less digits than its factorization.

389722992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870 (or 864 counting only the distinct ones).

The product of its digits is 979776, while the sum is 51.

The square root of 389722992 is about 19741.4029896560. The cubic root of 389722992 is about 730.4413369298.

The spelling of 389722992 in words is "three hundred eighty-nine million, seven hundred twenty-two thousand, nine hundred ninety-two".