13972169 has 2 divisors, whose sum is σ = 13972170. Its totient is φ = 13972168.

The previous prime is 13972151. The next prime is 13972187. The reversal of 13972169 is 96127931.

It is a happy number.

13972169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (13972151) and next prime (13972187).

It can be written as a sum of positive squares in only one way, i.e., 12996025 + 976144 = 3605^2 + 988^2 .

It is a cyclic number.

It is not a de Polignac number, because 13972169 - 2²⁰ = 12923593 is a prime.

It is a super-2 number, since 2×13972169² = 390443013129122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13972369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6986084 + 6986085.

It is an arithmetic number, because the mean of its divisors is an integer number (6986085).

Almost surely, 2^13972169 is an apocalyptic number.

It is an amenable number.

13972169 is a deficient number, since it is larger than the sum of its proper divisors (1).

13972169 is an equidigital number, since it uses as much as digits as its factorization.

13972169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 38.

The square root of 13972169 is about 3737.9364628094. The cubic root of 13972169 is about 240.8544141166.

It can be divided in two parts, 13972 and 169, that added together give a palindrome (14141).

The spelling of 13972169 in words is "thirteen million, nine hundred seventy-two thousand, one hundred sixty-nine".