398876678902 has 96 divisors (see below), whose sum is σ = 690611322240. Its totient is φ = 171551520000.

The previous prime is 398876678899. The next prime is 398876678909. The reversal of 398876678902 is 209876678893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398876678909) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 531127027 + ... + 531127777.

It is an arithmetic number, because the mean of its divisors is an integer number (7193867940).

Almost surely, 2^398876678902 is an apocalyptic number.

398876678902 is a deficient number, since it is larger than the sum of its proper divisors (291734643338).

398876678902 is a wasteful number, since it uses less digits than its factorization.

398876678902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590 (or 1559 counting only the distinct ones).

The product of its (nonzero) digits is 438939648, while the sum is 73.

The spelling of 398876678902 in words is "three hundred ninety-eight billion, eight hundred seventy-six million, six hundred seventy-eight thousand, nine hundred two".