9998444 has 12 divisors (see below), whose sum is σ = 17631768. Its totient is φ = 4960800.

The previous prime is 9998441. The next prime is 9998447. The reversal of 9998444 is 4448999.

It is an interprime number because it is at equal distance from previous prime (9998441) and next prime (9998447).

It is a super-2 number, since 2×9998444² = 199937764842272, which contains 22 as substring.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9998441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9017 + ... + 10064.

It is an arithmetic number, because the mean of its divisors is an integer number (1469314).

Almost surely, 2^9998444 is an apocalyptic number.

It is an amenable number.

9998444 is a deficient number, since it is larger than the sum of its proper divisors (7633324).

9998444 is a wasteful number, since it uses less digits than its factorization.

9998444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19216 (or 19214 counting only the distinct ones).

The product of its digits is 373248, while the sum is 47.

The square root of 9998444 is about 3162.0316253953. The cubic root of 9998444 is about 215.4322940890.

The spelling of 9998444 in words is "nine million, nine hundred ninety-eight thousand, four hundred forty-four".