389884792 has 64 divisors (see below), whose sum is σ = 819590400. Its totient is φ = 172381440.

The previous prime is 389884771. The next prime is 389884811. The reversal of 389884792 is 297488983.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 524373 + ... + 525115.

It is an arithmetic number, because the mean of its divisors is an integer number (12806100).

Almost surely, 2^389884792 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 389884792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409795200).

389884792 is an abundant number, since it is smaller than the sum of its proper divisors (429705608).

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

389884792 is a wasteful number, since it uses less digits than its factorization.

389884792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916 (or 912 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 58.

The square root of 389884792 is about 19745.5005507584. The cubic root of 389884792 is about 730.5424079118.

The spelling of 389884792 in words is "three hundred eighty-nine million, eight hundred eighty-four thousand, seven hundred ninety-two".