398113137 has 40 divisors (see below), whose sum is σ = 630168000. Its totient is φ = 249772896.

The previous prime is 398113127. The next prime is 398113139. The reversal of 398113137 is 731311893.

It is not a de Polignac number, because 398113137 - 2²⁰ = 397064561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398113139) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 256239 + ... + 257787.

It is an arithmetic number, because the mean of its divisors is an integer number (15754200).

Almost surely, 2^398113137 is an apocalyptic number.

It is an amenable number.

398113137 is a deficient number, since it is larger than the sum of its proper divisors (232054863).

398113137 is a wasteful number, since it uses less digits than its factorization.

398113137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747 (or 1738 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 398113137 is about 19952.7726644695. The cubic root of 398113137 is about 735.6459294736.

The spelling of 398113137 in words is "three hundred ninety-eight million, one hundred thirteen thousand, one hundred thirty-seven".