9998794800 has 360 divisors, whose sum is σ = 36969285600. Its totient is φ = 2493849600.

The previous prime is 9998794759. The next prime is 9998794847. The reversal of 9998794800 is 84978999.

It is a tau number, because it is divible by the number of its divisors (360).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 12178390 + ... + 12179210.

It is an arithmetic number, because the mean of its divisors is an integer number (102692460).

Almost surely, 2^9998794800 is an apocalyptic number.

9998794800 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9998794800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18484642800).

9998794800 is an abundant number, since it is smaller than the sum of its proper divisors (26970490800).

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

9998794800 is a wasteful number, since it uses less digits than its factorization.

9998794800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061 (or 1047 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 63.

The square root of 9998794800 is about 99993.9738184257. The cubic root of 9998794800 is about 2154.3481357317.

The spelling of 9998794800 in words is "nine billion, nine hundred ninety-eight million, seven hundred ninety-four thousand, eight hundred".