398985584 has 20 divisors (see below), whose sum is σ = 776122200. Its totient is φ = 198696000.

The previous prime is 398985583. The next prime is 398985607. The reversal of 398985584 is 485589893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398985581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45659 + ... + 53690.

It is an arithmetic number, because the mean of its divisors is an integer number (38806110).

Almost surely, 2^398985584 is an apocalyptic number.

It is an amenable number.

398985584 is a deficient number, since it is larger than the sum of its proper divisors (377136616).

398985584 is a wasteful number, since it uses less digits than its factorization.

398985584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99608 (or 99602 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 59.

The square root of 398985584 is about 19974.6235008322. The cubic root of 398985584 is about 736.1829157057.

The spelling of 398985584 in words is "three hundred ninety-eight million, nine hundred eighty-five thousand, five hundred eighty-four".