It is a tau number, because it is divible by the number of its divisors (240).
It is a congruent number.
It is an unprimeable number.
Almost surely, 299830640 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 99830640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194143824).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
99830640 is a wasteful number, since it uses less digits than its factorization.
99830640 is an odious number, because the sum of its binary digits is odd.
The square root of 99830640 is about 9991.5284116095. The cubic root of 99830640 is about 463.8967021339.
The spelling of 99830640 in words is "ninety-nine million, eight hundred thirty thousand, six hundred forty".