398830850867 has 2 divisors, whose sum is σ = 398830850868. Its totient is φ = 398830850866.

The previous prime is 398830850861. The next prime is 398830850911. The reversal of 398830850867 is 768058038893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398830850867 - 2²⁰ = 398829802291 is a prime.

It is not a weakly prime, because it can be changed into another prime (398830850861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199415425433 + 199415425434.

It is an arithmetic number, because the mean of its divisors is an integer number (199415425434).

Almost surely, 2^398830850867 is an apocalyptic number.

398830850867 is a deficient number, since it is larger than the sum of its proper divisors (1).

398830850867 is an equidigital number, since it uses as much as digits as its factorization.

398830850867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69672960, while the sum is 65.

The spelling of 398830850867 in words is "three hundred ninety-eight billion, eight hundred thirty million, eight hundred fifty thousand, eight hundred sixty-seven".