389869056 has 240 divisors, whose sum is σ = 1220316240. Its totient is φ = 119439360.

The previous prime is 389869049. The next prime is 389869061. The reversal of 389869056 is 650968983.

It is a super-2 number, since 2×389869056² = 303995761652662272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 389868993 and 389869011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5340636 + ... + 5340708.

It is an arithmetic number, because the mean of its divisors is an integer number (5084651).

Almost surely, 2^389869056 is an apocalyptic number.

389869056 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389869056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (610158120).

389869056 is an abundant number, since it is smaller than the sum of its proper divisors (830447184).

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

389869056 is a wasteful number, since it uses less digits than its factorization.

389869056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The square root of 389869056 is about 19745.1020762112. The cubic root of 389869056 is about 730.5325793930.

The spelling of 389869056 in words is "three hundred eighty-nine million, eight hundred sixty-nine thousand, fifty-six".