389648238 has 96 divisors (see below), whose sum is σ = 971458560. Its totient is φ = 101943360.

The previous prime is 389648201. The next prime is 389648243. The reversal of 389648238 is 832846983.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 469608 + ... + 470436.

It is an arithmetic number, because the mean of its divisors is an integer number (10119360).

Almost surely, 2^389648238 is an apocalyptic number.

389648238 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 389648238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (485729280).

389648238 is an abundant number, since it is smaller than the sum of its proper divisors (581810322).

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

389648238 is a wasteful number, since it uses less digits than its factorization.

389648238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910 (or 891 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 51.

The square root of 389648238 is about 19739.5095683758. The cubic root of 389648238 is about 730.3946311888.

The spelling of 389648238 in words is "three hundred eighty-nine million, six hundred forty-eight thousand, two hundred thirty-eight".