398544 has 60 divisors (see below), whose sum is σ = 1133856. Its totient is φ = 120384.

The previous prime is 398543. The next prime is 398549. The reversal of 398544 is 445893.

Its product of digits (17280) is a multiple of the sum of its prime factors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398543) 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 11 ways as a sum of consecutive naturals, for example, 17317 + ... + 17339.

2³⁹⁸⁵⁴⁴ 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 398544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (566928).

398544 is an abundant number, since it is smaller than the sum of its proper divisors (735312).

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

398544 is a wasteful number, since it uses less digits than its factorization.

398544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72 (or 47 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 398544 is about 631.3034135818. The cubic root of 398544 is about 73.5911221176.

The spelling of 398544 in words is "three hundred ninety-eight thousand, five hundred forty-four".