11689187 has 2 divisors, whose sum is σ = 11689188. Its totient is φ = 11689186.

The previous prime is 11689169. The next prime is 11689193. The reversal of 11689187 is 78198611.

It is a strong prime.

It is an emirp because it is prime and its reverse (78198611) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11689187 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11689127) 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, 5844593 + 5844594.

It is an arithmetic number, because the mean of its divisors is an integer number (5844594).

Almost surely, 2^11689187 is an apocalyptic number.

11689187 is a deficient number, since it is larger than the sum of its proper divisors (1).

11689187 is an equidigital number, since it uses as much as digits as its factorization.

11689187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 41.

The square root of 11689187 is about 3418.9453052074. The cubic root of 11689187 is about 226.9489104687.

The spelling of 11689187 in words is "eleven million, six hundred eighty-nine thousand, one hundred eighty-seven".