398508 has 24 divisors (see below), whose sum is σ = 1014720. Its totient is φ = 120720.

The previous prime is 398491. The next prime is 398509. The reversal of 398508 is 805893.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (398509) 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, 1378 + ... + 1641.

It is an arithmetic number, because the mean of its divisors is an integer number (42280).

2³⁹⁸⁵⁰⁸ is an apocalyptic number.

It is an amenable number.

398508 is an abundant number, since it is smaller than the sum of its proper divisors (616212).

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

398508 is a wasteful number, since it uses less digits than its factorization.

398508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3037 (or 3035 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 398508 is about 631.2749004990. The cubic root of 398508 is about 73.5889062517.

The spelling of 398508 in words is "three hundred ninety-eight thousand, five hundred eight".