It is a happy number.
It is a Curzon number.
It is a congruent number.
It is an unprimeable number.
299450 is an apocalyptic number.
99450 is a gapful number since it is divisible by the number (90) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 99450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152334).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
99450 is a wasteful number, since it uses less digits than its factorization.
99450 is an evil number, because the sum of its binary digits is even.
The square root of 99450 is about 315.3569406244. The cubic root of 99450 is about 46.3306360534.
The spelling of 99450 in words is "ninety-nine thousand, four hundred fifty".