389791488 has 72 divisors (see below), whose sum is σ = 1082567808. Its totient is φ = 124275712.

The previous prime is 389791471. The next prime is 389791499. The reversal of 389791488 is 884197983.

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, 6631 + ... + 28697.

It is an arithmetic number, because the mean of its divisors is an integer number (15035664).

Almost surely, 2^389791488 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 389791488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541283904).

389791488 is an abundant number, since it is smaller than the sum of its proper divisors (692776320).

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

389791488 is a wasteful number, since it uses less digits than its factorization.

389791488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22109 (or 22095 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 57.

The square root of 389791488 is about 19743.1377445430. The cubic root of 389791488 is about 730.4841274758.

The spelling of 389791488 in words is "three hundred eighty-nine million, seven hundred ninety-one thousand, four hundred eighty-eight".