14166391 has 2 divisors, whose sum is σ = 14166392. Its totient is φ = 14166390.

The previous prime is 14166379. The next prime is 14166401. The reversal of 14166391 is 19366141.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 14166391 - 2⁷ = 14166263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14166331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7083195 + 7083196.

It is an arithmetic number, because the mean of its divisors is an integer number (7083196).

Almost surely, 2^14166391 is an apocalyptic number.

14166391 is a deficient number, since it is larger than the sum of its proper divisors (1).

14166391 is an equidigital number, since it uses as much as digits as its factorization.

14166391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 31.

The square root of 14166391 is about 3763.8266431917. The cubic root of 14166391 is about 241.9652922471.

The spelling of 14166391 in words is "fourteen million, one hundred sixty-six thousand, three hundred ninety-one".