402198579 has 6 divisors (see below), whose sum is σ = 580953516. Its totient is φ = 268132380.

The previous prime is 402198571. The next prime is 402198583. The reversal of 402198579 is 975891204.

402198579 is a `hidden beast` number, since 402 + 198 + 57 + 9 = 666.

It is not a de Polignac number, because 402198579 - 2³ = 402198571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402198571) 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, 22344357 + ... + 22344374.

It is an arithmetic number, because the mean of its divisors is an integer number (96825586).

Almost surely, 2^402198579 is an apocalyptic number.

402198579 is a deficient number, since it is larger than the sum of its proper divisors (178754937).

402198579 is a wasteful number, since it uses less digits than its factorization.

402198579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44688737 (or 44688734 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 402198579 is about 20054.8891545179. The cubic root of 402198579 is about 738.1537730112.

The spelling of 402198579 in words is "four hundred two million, one hundred ninety-eight thousand, five hundred seventy-nine".