398877632196 has 12 divisors (see below), whose sum is σ = 930714475152. Its totient is φ = 132959210728.

The previous prime is 398877632143. The next prime is 398877632243. The reversal of 398877632196 is 691236778893.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 398877632196.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16619901330 + ... + 16619901353.

It is an arithmetic number, because the mean of its divisors is an integer number (77559539596).

Almost surely, 2^398877632196 is an apocalyptic number.

It is an amenable number.

398877632196 is an abundant number, since it is smaller than the sum of its proper divisors (531836842956).

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

398877632196 is a wasteful number, since it uses less digits than its factorization.

398877632196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33239802690 (or 33239802688 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 69.

The spelling of 398877632196 in words is "three hundred ninety-eight billion, eight hundred seventy-seven million, six hundred thirty-two thousand, one hundred ninety-six".