It is a happy number.
It is the 4082-nd star number.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35815999 = 2549 ⋅14051.
It is a cyclic number.
It is a Duffinian number.
It is a congruent number.
Almost surely, 299951853 is an apocalyptic number.
It is an amenable number.
99951853 is a wasteful number, since it uses less digits than its factorization.
99951853 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 20434.
The square root of 99951853 is about 9997.5923601635. The cubic root of 99951853 is about 464.0843785435.
The spelling of 99951853 in words is "ninety-nine million, nine hundred fifty-one thousand, eight hundred fifty-three".