398444 has 6 divisors (see below), whose sum is σ = 697284. Its totient is φ = 199220.

The previous prime is 398441. The next prime is 398459. The reversal of 398444 is 444893.

It is a super-2 number, since 2×398444² = 317515242272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 398444.

It is not an unprimeable number, because it can be changed into a prime (398441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49802 + ... + 49809.

It is an arithmetic number, because the mean of its divisors is an integer number (116214).

2³⁹⁸⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

398444 is a deficient number, since it is larger than the sum of its proper divisors (298840).

398444 is a wasteful number, since it uses less digits than its factorization.

398444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99615 (or 99613 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 398444 is about 631.2242073939. The cubic root of 398444 is about 73.5849666050.

The spelling of 398444 in words is "three hundred ninety-eight thousand, four hundred forty-four".