398615163 has 4 divisors (see below), whose sum is σ = 531486888. Its totient is φ = 265743440.

The previous prime is 398615159. The next prime is 398615177. The reversal of 398615163 is 361516893.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 398615163 - 2² = 398615159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398615363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66435858 + ... + 66435863.

It is an arithmetic number, because the mean of its divisors is an integer number (132871722).

Almost surely, 2^398615163 is an apocalyptic number.

398615163 is a deficient number, since it is larger than the sum of its proper divisors (132871725).

398615163 is a wasteful number, since it uses less digits than its factorization.

398615163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132871724.

The product of its digits is 116640, while the sum is 42.

The square root of 398615163 is about 19965.3490578051. The cubic root of 398615163 is about 735.9550193791.

The spelling of 398615163 in words is "three hundred ninety-eight million, six hundred fifteen thousand, one hundred sixty-three".