998444 has 12 divisors (see below), whose sum is σ = 1850184. Its totient is φ = 469824.

The previous prime is 998443. The next prime is 998471. The reversal of 998444 is 444899.

It is a super-2 number, since 2×998444² = 1993780842272, which contains 22 as substring.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 998398 and 998407.

It is not an unprimeable number, because it can be changed into a prime (998443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7274 + ... + 7409.

It is an arithmetic number, because the mean of its divisors is an integer number (154182).

2⁹⁹⁸⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

998444 is a deficient number, since it is larger than the sum of its proper divisors (851740).

998444 is a wasteful number, since it uses less digits than its factorization.

998444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14704 (or 14702 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 998444 is about 999.2216971223. The cubic root of 998444 is about 99.9481064085.

The spelling of 998444 in words is "nine hundred ninety-eight thousand, four hundred forty-four".