398936574 has 12 divisors (see below), whose sum is σ = 864362616. Its totient is φ = 132978852.

The previous prime is 398936563. The next prime is 398936581. The reversal of 398936574 is 475639893.

398936574 is a `hidden beast` number, since 39 + 8 + 9 + 36 + 574 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 398936574.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 11081554 + ... + 11081589.

It is an arithmetic number, because the mean of its divisors is an integer number (72030218).

Almost surely, 2^398936574 is an apocalyptic number.

398936574 is an abundant number, since it is smaller than the sum of its proper divisors (465426042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398936574 is a wasteful number, since it uses less digits than its factorization.

398936574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22163151 (or 22163148 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 398936574 is about 19973.3966565529. The cubic root of 398936574 is about 736.1527710893.

The spelling of 398936574 in words is "three hundred ninety-eight million, nine hundred thirty-six thousand, five hundred seventy-four".