398871 has 32 divisors (see below), whose sum is σ = 691200. Its totient is φ = 224640.

The previous prime is 398863. The next prime is 398887. The reversal of 398871 is 178893.

398871 = 124² + 125² + ... + 145².

398871 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 398871 - 2³ = 398863 is a prime.

398871 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5010 + ... + 5088.

It is an arithmetic number, because the mean of its divisors is an integer number (21600).

2³⁹⁸⁸⁷¹ is an apocalyptic number.

398871 is a deficient number, since it is larger than the sum of its proper divisors (292329).

398871 is a wasteful number, since it uses less digits than its factorization.

398871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 110 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 398871 is about 631.5623484661. The cubic root of 398871 is about 73.6112434580.

The spelling of 398871 in words is "three hundred ninety-eight thousand, eight hundred seventy-one".