14166409 has 2 divisors, whose sum is σ = 14166410. Its totient is φ = 14166408.

The previous prime is 14166407. The next prime is 14166421. The reversal of 14166409 is 90466141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8573184 + 5593225 = 2928^2 + 2365^2 .

It is a cyclic number.

It is not a de Polignac number, because 14166409 - 2¹ = 14166407 is a prime.

Together with 14166407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (14166401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7083204 + 7083205.

It is an arithmetic number, because the mean of its divisors is an integer number (7083205).

Almost surely, 2^14166409 is an apocalyptic number.

It is an amenable number.

14166409 is a deficient number, since it is larger than the sum of its proper divisors (1).

14166409 is an equidigital number, since it uses as much as digits as its factorization.

14166409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 14166409 is about 3763.8290343744. The cubic root of 14166409 is about 241.9653947285.

The spelling of 14166409 in words is "fourteen million, one hundred sixty-six thousand, four hundred nine".