398862 has 12 divisors (see below), whose sum is σ = 864240. Its totient is φ = 132948.

The previous prime is 398857. The next prime is 398863. The reversal of 398862 is 268893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398863) by changing a digit.

398862 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11062 + ... + 11097.

It is an arithmetic number, because the mean of its divisors is an integer number (72020).

2³⁹⁸⁸⁶² is an apocalyptic number.

398862 is an abundant number, since it is smaller than the sum of its proper divisors (465378).

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

398862 is a wasteful number, since it uses less digits than its factorization.

398862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22167 (or 22164 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 398862 is about 631.5552232386. Note that the first 3 decimals coincide. The cubic root of 398862 is about 73.6106898068.

The spelling of 398862 in words is "three hundred ninety-eight thousand, eight hundred sixty-two".