398584 has 8 divisors (see below), whose sum is σ = 747360. Its totient is φ = 199288.

The previous prime is 398581. The next prime is 398591. The reversal of 398584 is 485893.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24904 + ... + 24919.

It is an arithmetic number, because the mean of its divisors is an integer number (93420).

2³⁹⁸⁵⁸⁴ is an apocalyptic number.

It is an amenable number.

398584 is a deficient number, since it is larger than the sum of its proper divisors (348776).

398584 is a wasteful number, since it uses less digits than its factorization.

398584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49829 (or 49825 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 398584 is about 631.3350932746. The cubic root of 398584 is about 73.5935840343.

The spelling of 398584 in words is "three hundred ninety-eight thousand, five hundred eighty-four".