398524 has 24 divisors (see below), whose sum is σ = 818048. Its totient is φ = 166320.

The previous prime is 398509. The next prime is 398539. The reversal of 398524 is 425893.

It is an interprime number because it is at equal distance from previous prime (398509) and next prime (398539).

It is an Ulam number.

It is a congruent number.

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, 1039 + ... + 1369.

2³⁹⁸⁵²⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409024).

398524 is an abundant number, since it is smaller than the sum of its proper divisors (419524).

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

398524 is a wasteful number, since it uses less digits than its factorization.

398524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 383 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 398524 is about 631.2875731392. The cubic root of 398524 is about 73.5898910974.

The spelling of 398524 in words is "three hundred ninety-eight thousand, five hundred twenty-four".