11399939 has 2 divisors, whose sum is σ = 11399940. Its totient is φ = 11399938.

The previous prime is 11399933. The next prime is 11399957. The reversal of 11399939 is 93999311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11399939 - 2⁸ = 11399683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11399939.

It is not a weakly prime, because it can be changed into another prime (11399933) 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, 5699969 + 5699970.

It is an arithmetic number, because the mean of its divisors is an integer number (5699970).

Almost surely, 2^11399939 is an apocalyptic number.

11399939 is a deficient number, since it is larger than the sum of its proper divisors (1).

11399939 is an equidigital number, since it uses as much as digits as its factorization.

11399939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 59049, while the sum is 44.

The square root of 11399939 is about 3376.3795698944. The cubic root of 11399939 is about 225.0613100411.

The spelling of 11399939 in words is "eleven million, three hundred ninety-nine thousand, nine hundred thirty-nine".