49998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a nialpdrome in base 15.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 49998.
49998 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
249998 is an apocalyptic number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
49998 is a wasteful number, since it uses less digits than its factorization.
49998 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 659.
The square root of 49998 is about 223.6023255693. The cubic root of 49998 is about 36.8398237757.
The spelling of 49998 in words is "forty-nine thousand, nine hundred ninety-eight".