It is a happy number.
It is a tau number, because it is divible by the number of its divisors (40).
It is a nialpdrome in base 10.
It is an unprimeable number.
Almost surely, 299999760 is an apocalyptic number.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
99999760 is a wasteful number, since it uses less digits than its factorization.
99999760 is an evil number, because the sum of its binary digits is even.
The square root of 99999760 is about 9999.9879999928. The cubic root of 99999760 is about 464.1585120339.
The spelling of 99999760 in words is "ninety-nine million, nine hundred ninety-nine thousand, seven hundred sixty".