398587163 has 4 divisors (see below), whose sum is σ = 429247728. Its totient is φ = 367926600.

The previous prime is 398587141. The next prime is 398587177. The reversal of 398587163 is 361785893.

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 398587163 - 2¹⁴ = 398570779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398587103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15330263 + ... + 15330288.

It is an arithmetic number, because the mean of its divisors is an integer number (107311932).

Almost surely, 2^398587163 is an apocalyptic number.

398587163 is a deficient number, since it is larger than the sum of its proper divisors (30660565).

398587163 is a wasteful number, since it uses less digits than its factorization.

398587163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30660564.

The product of its digits is 1088640, while the sum is 50.

The square root of 398587163 is about 19964.6478306030. The cubic root of 398587163 is about 735.9377870332.

The spelling of 398587163 in words is "three hundred ninety-eight million, five hundred eighty-seven thousand, one hundred sixty-three".