11719859 has 2 divisors, whose sum is σ = 11719860. Its totient is φ = 11719858.

The previous prime is 11719847. The next prime is 11719867. The reversal of 11719859 is 95891711.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11719859 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11719889) 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, 5859929 + 5859930.

It is an arithmetic number, because the mean of its divisors is an integer number (5859930).

Almost surely, 2^11719859 is an apocalyptic number.

11719859 is a deficient number, since it is larger than the sum of its proper divisors (1).

11719859 is an equidigital number, since it uses as much as digits as its factorization.

11719859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 41.

The square root of 11719859 is about 3423.4279603929. The cubic root of 11719859 is about 227.1472389864.

The spelling of 11719859 in words is "eleven million, seven hundred nineteen thousand, eight hundred fifty-nine".