14 is nontrivially palindromic in base 6 and base 13.
14 is an esthetic number in base 4, base 12 and base 14, because in such bases it adjacent digits differ by 1.
It is the 4-th Catalan number.
14 is a repfigit number.
It is a magnanimous number.
It is an alternating number because its digits alternate between odd and even.
It is a Curzon number.
14 is a nontrivial repdigit in base 6 and base 13.
It is a plaindrome in base 3, base 5, base 6, base 8, base 9, base 10, base 11, base 12 and base 13.
It is a nialpdrome in base 2, base 4, base 6, base 7, base 13 and base 14.
It is a zygodrome in base 6 and base 13.
It is a congruent number.
It is a panconsummate number.
14 is an equidigital number, since it uses as much as digits as its factorization.
14 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9.
The square root of 14 is about 3.7416573868. The cubic root of 14 is about 2.4101422642.