398598 has 16 divisors (see below), whose sum is σ = 823296. Its totient is φ = 128520.

The previous prime is 398591. The next prime is 398609. The reversal of 398598 is 895893.

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 pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 886 + ... + 1257.

It is an arithmetic number, because the mean of its divisors is an integer number (51456).

2³⁹⁸⁵⁹⁸ is an apocalyptic number.

398598 is an abundant number, since it is smaller than the sum of its proper divisors (424698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398598 is a wasteful number, since it uses less digits than its factorization.

398598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179.

The product of its digits is 77760, while the sum is 42.

The square root of 398598 is about 631.3461807915. The cubic root of 398598 is about 73.5944456662.

The spelling of 398598 in words is "three hundred ninety-eight thousand, five hundred ninety-eight".