13966369 has 2 divisors, whose sum is σ = 13966370. Its totient is φ = 13966368.

The previous prime is 13966321. The next prime is 13966391. The reversal of 13966369 is 96366931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12673600 + 1292769 = 3560^2 + 1137^2 .

It is a cyclic number.

It is not a de Polignac number, because 13966369 - 2⁷ = 13966241 is a prime.

It is a super-2 number, since 2×13966369² = 390118926088322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13966319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6983184 + 6983185.

It is an arithmetic number, because the mean of its divisors is an integer number (6983185).

Almost surely, 2^13966369 is an apocalyptic number.

It is an amenable number.

13966369 is a deficient number, since it is larger than the sum of its proper divisors (1).

13966369 is an equidigital number, since it uses as much as digits as its factorization.

13966369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 43.

The square root of 13966369 is about 3737.1605531473. The cubic root of 13966369 is about 240.8210824045.

The spelling of 13966369 in words is "thirteen million, nine hundred sixty-six thousand, three hundred sixty-nine".