398830858597 has 12 divisors (see below), whose sum is σ = 434004999876. Its totient is φ = 366214837760.

The previous prime is 398830858579. The next prime is 398830858633. The reversal of 398830858597 is 795858038893.

It can be written as a sum of positive squares in 6 ways, for example, as 1671256161 + 397159602436 = 40881^2 + 630206^2 .

It is not a de Polignac number, because 398830858597 - 2⁷ = 398830858469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398830858537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16817878 + ... + 16841575.

It is an arithmetic number, because the mean of its divisors is an integer number (36167083323).

Almost surely, 2^398830858597 is an apocalyptic number.

It is an amenable number.

398830858597 is a deficient number, since it is larger than the sum of its proper divisors (35174141279).

398830858597 is a wasteful number, since it uses less digits than its factorization.

398830858597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33659528 (or 33659511 counting only the distinct ones).

The product of its (nonzero) digits is 522547200, while the sum is 73.

The spelling of 398830858597 in words is "three hundred ninety-eight billion, eight hundred thirty million, eight hundred fifty-eight thousand, five hundred ninety-seven".