Multipling 12769 by its sum of digits (25), we get a square (319225 = 5652).
Multipling 12769 by its reverse (96721), we get a square (1235030449 = 351432).
The square root of 12769 is 113.
12769 is nontrivially palindromic in base 3.
12769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 96721 = 3112.
It is an alternating number because its digits alternate between odd and even.
It is a Duffinian number.
12769 is a Friedman number, since it can be written as (96+17)^2, using all its digits and the basic arithmetic operations.
212769 is an apocalyptic number.
12769 is the 113-rd square number.
12769 is the 57-th centered octagonal number.
It is an amenable number.
12769 is an frugal number, since it uses more digits than its factorization.
12769 is an odious number, because the sum of its binary digits is odd.
The cubic root of 12769 is about 23.3732423588.
The spelling of 12769 in words is "twelve thousand, seven hundred sixty-nine".