398995 has 8 divisors (see below), whose sum is σ = 482400. Its totient is φ = 316800.

The previous prime is 398989. The next prime is 399023. The reversal of 398995 is 599893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 398995 - 2¹¹ = 396947 is a prime.

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, 795 + ... + 1195.

It is an arithmetic number, because the mean of its divisors is an integer number (60300).

2³⁹⁸⁹⁹⁵ is an apocalyptic number.

398995 is a deficient number, since it is larger than the sum of its proper divisors (83405).

398995 is a wasteful number, since it uses less digits than its factorization.

398995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605.

The product of its digits is 87480, while the sum is 43.

The square root of 398995 is about 631.6605100843. The cubic root of 398995 is about 73.6188706929.

The spelling of 398995 in words is "three hundred ninety-eight thousand, nine hundred ninety-five".