9998489344 has 216 divisors, whose sum is σ = 22828185072. Its totient is φ = 4352409600.

The previous prime is 9998489329. The next prime is 9998489351. The reversal of 9998489344 is 4439848999.

It is a self number, because there is not a number n which added to its sum of digits gives 9998489344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98994894 + ... + 98994994.

It is an arithmetic number, because the mean of its divisors is an integer number (105686042).

Almost surely, 2^9998489344 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 9998489344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11414092536).

9998489344 is an abundant number, since it is smaller than the sum of its proper divisors (12829695728).

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

9998489344 is a wasteful number, since it uses less digits than its factorization.

9998489344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 186 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 67.

The square root of 9998489344 is about 99992.4464347183. The cubic root of 9998489344 is about 2154.3261975788.

The spelling of 9998489344 in words is "nine billion, nine hundred ninety-eight million, four hundred eighty-nine thousand, three hundred forty-four".