398279163 has 8 divisors (see below), whose sum is σ = 531191808. Its totient is φ = 265442984.

The previous prime is 398279129. The next prime is 398279177. The reversal of 398279163 is 361972893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 398279163 - 2⁶ = 398279099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398279113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5595 + ... + 28772.

It is an arithmetic number, because the mean of its divisors is an integer number (66398976).

Almost surely, 2^398279163 is an apocalyptic number.

398279163 is a deficient number, since it is larger than the sum of its proper divisors (132912645).

398279163 is a wasteful number, since it uses less digits than its factorization.

398279163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38233.

The product of its digits is 489888, while the sum is 48.

The square root of 398279163 is about 19956.9327052030. The cubic root of 398279163 is about 735.7481779430.

The spelling of 398279163 in words is "three hundred ninety-eight million, two hundred seventy-nine thousand, one hundred sixty-three".