It is a tau number, because it is divible by the number of its divisors (384).
It is a nialpdrome in base 10.
It is a congruent number.
Almost surely, 29999974400 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 9999974400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17861695320).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
9999974400 is a wasteful number, since it uses less digits than its factorization.
9999974400 is an evil number, because the sum of its binary digits is even.
The square root of 9999974400 is about 99999.8719999181. The cubic root of 9999974400 is about 2154.4328515794.
The spelling of 9999974400 in words is "nine billion, nine hundred ninety-nine million, nine hundred seventy-four thousand, four hundred".