398882865670 has 32 divisors (see below), whose sum is σ = 749675901888. Its totient is φ = 152520348288.

The previous prime is 398882865653. The next prime is 398882865671. The reversal of 398882865670 is 76568288893.

It is a happy number.

It is a super-2 number, since 2×398882865670² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 398882865670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398882865671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175669 + ... + 910288.

It is an arithmetic number, because the mean of its divisors is an integer number (23427371934).

Almost surely, 2^398882865670 is an apocalyptic number.

398882865670 is a deficient number, since it is larger than the sum of its proper divisors (350793036218).

398882865670 is a wasteful number, since it uses less digits than its factorization.

398882865670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087584.

The product of its (nonzero) digits is 278691840, while the sum is 70.

The spelling of 398882865670 in words is "three hundred ninety-eight billion, eight hundred eighty-two million, eight hundred sixty-five thousand, six hundred seventy".