11399879 has 2 divisors, whose sum is σ = 11399880. Its totient is φ = 11399878.

The previous prime is 11399873. The next prime is 11399891. The reversal of 11399879 is 97899311.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11399879 - 2¹⁶ = 11334343 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11399873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5699939 + 5699940.

It is an arithmetic number, because the mean of its divisors is an integer number (5699940).

Almost surely, 2^11399879 is an apocalyptic number.

11399879 is a deficient number, since it is larger than the sum of its proper divisors (1).

11399879 is an equidigital number, since it uses as much as digits as its factorization.

11399879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 47.

The square root of 11399879 is about 3376.3706846257. The cubic root of 11399879 is about 225.0609151939.

The spelling of 11399879 in words is "eleven million, three hundred ninety-nine thousand, eight hundred seventy-nine".