13985171 has 2 divisors, whose sum is σ = 13985172. Its totient is φ = 13985170.

The previous prime is 13985161. The next prime is 13985177. The reversal of 13985171 is 17158931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13985171 - 2⁶ = 13985107 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (13985177) 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, 6992585 + 6992586.

It is an arithmetic number, because the mean of its divisors is an integer number (6992586).

Almost surely, 2^13985171 is an apocalyptic number.

13985171 is a deficient number, since it is larger than the sum of its proper divisors (1).

13985171 is an equidigital number, since it uses as much as digits as its factorization.

13985171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 35.

The square root of 13985171 is about 3739.6752532807. The cubic root of 13985171 is about 240.9291011179.

The spelling of 13985171 in words is "thirteen million, nine hundred eighty-five thousand, one hundred seventy-one".