398559 has 8 divisors (see below), whose sum is σ = 607360. Its totient is φ = 227736.

The previous prime is 398557. The next prime is 398569. The reversal of 398559 is 955893.

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

It is not a de Polignac number, because 398559 - 2¹ = 398557 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9469 + ... + 9510.

It is an arithmetic number, because the mean of its divisors is an integer number (75920).

2³⁹⁸⁵⁵⁹ is an apocalyptic number.

398559 is a deficient number, since it is larger than the sum of its proper divisors (208801).

398559 is a wasteful number, since it uses less digits than its factorization.

398559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18989.

The product of its digits is 48600, while the sum is 39.

The square root of 398559 is about 631.3152936529. The cubic root of 398559 is about 73.5920453556.

The spelling of 398559 in words is "three hundred ninety-eight thousand, five hundred fifty-nine".