398882185892 has 12 divisors (see below), whose sum is σ = 698351485020. Its totient is φ = 199353190176.

The previous prime is 398882185853. The next prime is 398882185963. The reversal of 398882185892 is 298581288893.

It can be written as a sum of positive squares in 2 ways, for example, as 236299043236 + 162583142656 = 486106^2 + 403216^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21965483 + ... + 21983634.

It is an arithmetic number, because the mean of its divisors is an integer number (58195957085).

Almost surely, 2^398882185892 is an apocalyptic number.

It is an amenable number.

398882185892 is a deficient number, since it is larger than the sum of its proper divisors (299469299128).

398882185892 is a wasteful number, since it uses less digits than its factorization.

398882185892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43951390 (or 43951388 counting only the distinct ones).

The product of its digits is 159252480, while the sum is 71.

The spelling of 398882185892 in words is "three hundred ninety-eight billion, eight hundred eighty-two million, one hundred eighty-five thousand, eight hundred ninety-two".