13692409 has 2 divisors, whose sum is σ = 13692410. Its totient is φ = 13692408.

The previous prime is 13692347. The next prime is 13692443. The reversal of 13692409 is 90429631.

It is an a-pointer prime, because the next prime (13692443) can be obtained adding 13692409 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6906384 + 6786025 = 2628^2 + 2605^2 .

It is an emirp because it is prime and its reverse (90429631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13692409 - 2⁷ = 13692281 is a prime.

It is not a weakly prime, because it can be changed into another prime (13692449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6846204 + 6846205.

It is an arithmetic number, because the mean of its divisors is an integer number (6846205).

Almost surely, 2^13692409 is an apocalyptic number.

It is an amenable number.

13692409 is a deficient number, since it is larger than the sum of its proper divisors (1).

13692409 is an equidigital number, since it uses as much as digits as its factorization.

13692409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 13692409 is about 3700.3255262206. The cubic root of 13692409 is about 239.2360488337.

The spelling of 13692409 in words is "thirteen million, six hundred ninety-two thousand, four hundred nine".