It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
13998 is an admirable number.
It is a Curzon number.
It is a plaindrome in base 16.
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 13998.
13998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13998 is a wasteful number, since it uses less digits than its factorization.
13998 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2338.
The square root of 13998 is about 118.3131438176. The cubic root of 13998 is about 24.1002749003.
Adding to 13998 its sum of digits (30), we get a triangular number (14028 = T167).
The spelling of 13998 in words is "thirteen thousand, nine hundred ninety-eight".