389977336340 has 96 divisors (see below), whose sum is σ = 852905458944. Its totient is φ = 149668485120.

The previous prime is 389977336337. The next prime is 389977336361. The reversal of 389977336340 is 43633779983.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16902092 + ... + 16925148.

It is an arithmetic number, because the mean of its divisors is an integer number (8884431864).

Almost surely, 2^389977336340 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 389977336340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (426452729472).

389977336340 is an abundant number, since it is smaller than the sum of its proper divisors (462928122604).

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

389977336340 is a wasteful number, since it uses less digits than its factorization.

389977336340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23457 (or 23455 counting only the distinct ones).

The product of its (nonzero) digits is 61725888, while the sum is 62.

The spelling of 389977336340 in words is "three hundred eighty-nine billion, nine hundred seventy-seven million, three hundred thirty-six thousand, three hundred forty".