9998912 has 56 divisors (see below), whose sum is σ = 24749760. Its totient is φ = 3893760.

The previous prime is 9998903. The next prime is 9998929. The reversal of 9998912 is 2198999.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3914 + ... + 5942.

It is an arithmetic number, because the mean of its divisors is an integer number (441960).

Almost surely, 2^9998912 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 9998912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12374880).

9998912 is an abundant number, since it is smaller than the sum of its proper divisors (14750848).

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

9998912 is a wasteful number, since it uses less digits than its factorization.

9998912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059 (or 2049 counting only the distinct ones).

The product of its digits is 104976, while the sum is 47.

The square root of 9998912 is about 3162.1056275843. The cubic root of 9998912 is about 215.4356553033.

It can be divided in two parts, 99989 and 12, that added together give a palindrome (100001).

The spelling of 9998912 in words is "nine million, nine hundred ninety-eight thousand, nine hundred twelve".