It is a congruent number.
It is an unprimeable number.
Almost surely, 299871800 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 99871800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186595200).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
99871800 is a wasteful number, since it uses less digits than its factorization.
99871800 is an evil number, because the sum of its binary digits is even.
The square root of 99871800 is about 9993.5879442771. The cubic root of 99871800 is about 463.9604479762.
The spelling of 99871800 in words is "ninety-nine million, eight hundred seventy-one thousand, eight hundred".