398875 has 8 divisors (see below), whose sum is σ = 497952. Its totient is φ = 319000.

The previous prime is 398863. The next prime is 398887. The reversal of 398875 is 578893.

It is an interprime number because it is at equal distance from previous prime (398863) and next prime (398887).

It is not a de Polignac number, because 398875 - 2¹⁷ = 267803 is a prime.

It is a Duffinian number.

398875 is a lucky number.

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1471 + ... + 1720.

It is an arithmetic number, because the mean of its divisors is an integer number (62244).

2³⁹⁸⁸⁷⁵ is an apocalyptic number.

398875 is a deficient number, since it is larger than the sum of its proper divisors (99077).

398875 is an equidigital number, since it uses as much as digits as its factorization.

398875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206 (or 3196 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 398875 is about 631.5655152080. The cubic root of 398875 is about 73.6114895225.

The spelling of 398875 in words is "three hundred ninety-eight thousand, eight hundred seventy-five".