398389168 has 30 divisors (see below), whose sum is σ = 779777844. Its totient is φ = 197176608.

The previous prime is 398389163. The next prime is 398389177. The reversal of 398389168 is 861983893.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (398389163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 168571 + ... + 170917.

Almost surely, 2^398389168 is an apocalyptic number.

It is an amenable number.

398389168 is a deficient number, since it is larger than the sum of its proper divisors (381388676).

398389168 is a wasteful number, since it uses less digits than its factorization.

398389168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561 (or 2452 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 55.

The square root of 398389168 is about 19959.6885747248. The cubic root of 398389168 is about 735.8159097716.

The spelling of 398389168 in words is "three hundred ninety-eight million, three hundred eighty-nine thousand, one hundred sixty-eight".