398559486 has 32 divisors (see below), whose sum is σ = 881643168. Its totient is φ = 119318400.

The previous prime is 398559463. The next prime is 398559493. The reversal of 398559486 is 684955893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66165 + ... + 71936.

It is an arithmetic number, because the mean of its divisors is an integer number (27551349).

Almost surely, 2^398559486 is an apocalyptic number.

398559486 is an abundant number, since it is smaller than the sum of its proper divisors (483083682).

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

398559486 is a wasteful number, since it uses less digits than its factorization.

398559486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138156.

The product of its digits is 9331200, while the sum is 57.

The square root of 398559486 is about 19963.9546683517. The cubic root of 398559486 is about 735.9207526817.

The spelling of 398559486 in words is "three hundred ninety-eight million, five hundred fifty-nine thousand, four hundred eighty-six".