398830850871 has 16 divisors (see below), whose sum is σ = 554924611584. Its totient is φ = 254313391904.

The previous prime is 398830850867. The next prime is 398830850911. The reversal of 398830850871 is 178058038893.

It is a cyclic number.

It is not a de Polignac number, because 398830850871 - 2² = 398830850867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398830850861) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1244410 + ... + 1531736.

It is an arithmetic number, because the mean of its divisors is an integer number (34682788224).

Almost surely, 2^398830850871 is an apocalyptic number.

398830850871 is a deficient number, since it is larger than the sum of its proper divisors (156093760713).

398830850871 is a wasteful number, since it uses less digits than its factorization.

398830850871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307470.

The product of its (nonzero) digits is 11612160, while the sum is 60.

The spelling of 398830850871 in words is "three hundred ninety-eight billion, eight hundred thirty million, eight hundred fifty thousand, eight hundred seventy-one".