398708568 has 48 divisors (see below), whose sum is σ = 1119835080. Its totient is φ = 132902208.

The previous prime is 398708561. The next prime is 398708579. The reversal of 398708568 is 865807893.

It is a happy number.

398708568 is a `hidden beast` number, since 3 + 9 + 8 + 70 + 8 + 568 = 666.

It is a super-2 number, since 2×398708568² = 317937044393221248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398708561) 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 11 ways as a sum of consecutive naturals, for example, 100605 + ... + 104492.

Almost surely, 2^398708568 is an apocalyptic number.

It is an amenable number.

398708568 is an abundant number, since it is smaller than the sum of its proper divisors (721126512).

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

398708568 is a wasteful number, since it uses less digits than its factorization.

398708568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205118 (or 205102 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 398708568 is about 19967.6880985256. The cubic root of 398708568 is about 736.0124988032.

The spelling of 398708568 in words is "three hundred ninety-eight million, seven hundred eight thousand, five hundred sixty-eight".