389237688 has 48 divisors (see below), whose sum is σ = 1204784880. Its totient is φ = 111210624.

The previous prime is 389237663. The next prime is 389237689. The reversal of 389237688 is 886732983.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389237689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 385645 + ... + 386652.

It is an arithmetic number, because the mean of its divisors is an integer number (25099685).

Almost surely, 2^389237688 is an apocalyptic number.

It is an amenable number.

389237688 is an abundant number, since it is smaller than the sum of its proper divisors (815547192).

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

389237688 is a wasteful number, since it uses less digits than its factorization.

389237688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772316 (or 772309 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 389237688 is about 19729.1076331394. The cubic root of 389237688 is about 730.1380160639.

The spelling of 389237688 in words is "three hundred eighty-nine million, two hundred thirty-seven thousand, six hundred eighty-eight".