398020584 has 32 divisors (see below), whose sum is σ = 1071594720. Its totient is φ = 122467776.

The previous prime is 398020583. The next prime is 398020603. The reversal of 398020584 is 485020893.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (398020583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637542 + ... + 638165.

It is an arithmetic number, because the mean of its divisors is an integer number (33487335).

Almost surely, 2^398020584 is an apocalyptic number.

It is an amenable number.

398020584 is an abundant number, since it is smaller than the sum of its proper divisors (673574136).

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

398020584 is a wasteful number, since it uses less digits than its factorization.

398020584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275729 (or 1275725 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 398020584 is about 19950.4532279344. The cubic root of 398020584 is about 735.5889176108.

The spelling of 398020584 in words is "three hundred ninety-eight million, twenty thousand, five hundred eighty-four".