398882236660 has 48 divisors (see below), whose sum is σ = 901466208720. Its totient is φ = 147705661440.

The previous prime is 398882236657. The next prime is 398882236663. The reversal of 398882236660 is 66632288893.

It is an interprime number because it is at equal distance from previous prime (398882236657) and next prime (398882236663).

It can be written as a sum of positive squares in 8 ways, for example, as 1180472164 + 397701764496 = 34358^2 + 630636^2 .

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398882236663) 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, 9595515 + ... + 9636994.

It is an arithmetic number, because the mean of its divisors is an integer number (18780546015).

Almost surely, 2^398882236660 is an apocalyptic number.

It is an amenable number.

398882236660 is an abundant number, since it is smaller than the sum of its proper divisors (502583972060).

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

398882236660 is a wasteful number, since it uses less digits than its factorization.

398882236660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19232596 (or 19232594 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 61.

The spelling of 398882236660 in words is "three hundred ninety-eight billion, eight hundred eighty-two million, two hundred thirty-six thousand, six hundred sixty".