398869373980986 has 64 divisors (see below), whose sum is σ = 805060331873280. Its totient is φ = 131742673413120.

The previous prime is 398869373980963. The next prime is 398869373981003. The reversal of 398869373980986 is 689089373968893.

It is a junction number, because it is equal to n+sod(n) for n = 398869373980893 and 398869373980902.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 305511061 + ... + 306813863.

It is an arithmetic number, because the mean of its divisors is an integer number (12579067685520).

Almost surely, 2^{398869373980986} is an apocalyptic number.

398869373980986 is an abundant number, since it is smaller than the sum of its proper divisors (406190957892294).

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

398869373980986 is a wasteful number, since it uses less digits than its factorization.

398869373980986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304051.

The product of its (nonzero) digits is 182849716224, while the sum is 96.

The spelling of 398869373980986 in words is "three hundred ninety-eight trillion, eight hundred sixty-nine billion, three hundred seventy-three million, nine hundred eighty thousand, nine hundred eighty-six".