11787899 has 2 divisors, whose sum is σ = 11787900. Its totient is φ = 11787898.

The previous prime is 11787887. The next prime is 11787901. The reversal of 11787899 is 99878711.

It is a strong prime.

It is an emirp because it is prime and its reverse (99878711) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11787899 is a prime.

Together with 11787901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11787859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5893949 + 5893950.

It is an arithmetic number, because the mean of its divisors is an integer number (5893950).

Almost surely, 2^11787899 is an apocalyptic number.

11787899 is a deficient number, since it is larger than the sum of its proper divisors (1).

11787899 is an equidigital number, since it uses as much as digits as its factorization.

11787899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 50.

The square root of 11787899 is about 3433.3509870096. The cubic root of 11787899 is about 227.5859611554.

The spelling of 11787899 in words is "eleven million, seven hundred eighty-seven thousand, eight hundred ninety-nine".