398308086 has 24 divisors (see below), whose sum is σ = 941455944. Its totient is φ = 120699360.

The previous prime is 398308063. The next prime is 398308111. The reversal of 398308086 is 680803893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1005631 + ... + 1006026.

It is an arithmetic number, because the mean of its divisors is an integer number (39227331).

Almost surely, 2^398308086 is an apocalyptic number.

398308086 is an abundant number, since it is smaller than the sum of its proper divisors (543147858).

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

398308086 is a wasteful number, since it uses less digits than its factorization.

398308086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011676 (or 2011673 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 398308086 is about 19957.6573274520. The cubic root of 398308086 is about 735.7659875026.

The spelling of 398308086 in words is "three hundred ninety-eight million, three hundred eight thousand, eighty-six".