389870976 has 128 divisors (see below), whose sum is σ = 1179152640. Its totient is φ = 112977920.

The previous prime is 389870951. The next prime is 389870989. The reversal of 389870976 is 679078983.

It is a tau number, because it is divible by the number of its divisors (128).

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, 95146 + ... + 99158.

It is an arithmetic number, because the mean of its divisors is an integer number (9212130).

Almost surely, 2^389870976 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 389870976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (589576320).

389870976 is an abundant number, since it is smaller than the sum of its proper divisors (789281664).

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

389870976 is a wasteful number, since it uses less digits than its factorization.

389870976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064 (or 4052 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 57.

The square root of 389870976 is about 19745.1506958038. The cubic root of 389870976 is about 730.5337786164.

The spelling of 389870976 in words is "three hundred eighty-nine million, eight hundred seventy thousand, nine hundred seventy-six".