13997 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It is a cyclic number.
It is a Chen prime.
It is a plaindrome in base 6 and base 16.
It is a nialpdrome in base 7.
It is a zygodrome in base 7.
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 13997.
213997 is an apocalyptic number.
It is an amenable number.
13997 is an equidigital number, since it uses as much as digits as its factorization.
13997 is an odious number, because the sum of its binary digits is odd.
The square root of 13997 is about 118.3089176690. The cubic root of 13997 is about 24.0997009886.
The spelling of 13997 in words is "thirteen thousand, nine hundred ninety-seven".