398599 has 4 divisors (see below), whose sum is σ = 422064. Its totient is φ = 375136.

The previous prime is 398591. The next prime is 398609. The reversal of 398599 is 995893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 995893 = 839 ⋅1187.

It is a cyclic number.

It is not a de Polignac number, because 398599 - 2³ = 398591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11707 + ... + 11740.

It is an arithmetic number, because the mean of its divisors is an integer number (105516).

2³⁹⁸⁵⁹⁹ is an apocalyptic number.

398599 is a deficient number, since it is larger than the sum of its proper divisors (23465).

398599 is a wasteful number, since it uses less digits than its factorization.

398599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23464.

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

The square root of 398599 is about 631.3469727495. The cubic root of 398599 is about 73.5945072106.

The spelling of 398599 in words is "three hundred ninety-eight thousand, five hundred ninety-nine".