11993239799 has 2 divisors, whose sum is σ = 11993239800. Its totient is φ = 11993239798.

The previous prime is 11993239703. The next prime is 11993239801. The reversal of 11993239799 is 99793239911.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11993239799 is a prime.

It is a Sophie Germain prime.

Together with 11993239801, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11993239199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5996619899 + 5996619900.

It is an arithmetic number, because the mean of its divisors is an integer number (5996619900).

Almost surely, 2^11993239799 is an apocalyptic number.

11993239799 is a deficient number, since it is larger than the sum of its proper divisors (1).

11993239799 is an equidigital number, since it uses as much as digits as its factorization.

11993239799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7440174, while the sum is 62.

The spelling of 11993239799 in words is "eleven billion, nine hundred ninety-three million, two hundred thirty-nine thousand, seven hundred ninety-nine".