11391617 has 2 divisors, whose sum is σ = 11391618. Its totient is φ = 11391616.

The previous prime is 11391607. The next prime is 11391623. The reversal of 11391617 is 71619311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11262736 + 128881 = 3356^2 + 359^2 .

It is a cyclic number.

It is not a de Polignac number, because 11391617 - 2⁸ = 11391361 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11391617.

It is not a weakly prime, because it can be changed into another prime (11391607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5695808 + 5695809.

It is an arithmetic number, because the mean of its divisors is an integer number (5695809).

Almost surely, 2^11391617 is an apocalyptic number.

It is an amenable number.

11391617 is a deficient number, since it is larger than the sum of its proper divisors (1).

11391617 is an equidigital number, since it uses as much as digits as its factorization.

11391617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134, while the sum is 29.

The square root of 11391617 is about 3375.1469597634. The cubic root of 11391617 is about 225.0065314976.

The spelling of 11391617 in words is "eleven million, three hundred ninety-one thousand, six hundred seventeen".