11399279 has 2 divisors, whose sum is σ = 11399280. Its totient is φ = 11399278.

The previous prime is 11399261. The next prime is 11399281. The reversal of 11399279 is 97299311.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11399279 is a prime.

Together with 11399281, 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 (11399249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5699639 + 5699640.

It is an arithmetic number, because the mean of its divisors is an integer number (5699640).

Almost surely, 2^11399279 is an apocalyptic number.

11399279 is a deficient number, since it is larger than the sum of its proper divisors (1).

11399279 is an equidigital number, since it uses as much as digits as its factorization.

11399279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 41.

The square root of 11399279 is about 3376.2818306534. The cubic root of 11399279 is about 225.0569666456.

The spelling of 11399279 in words is "eleven million, three hundred ninety-nine thousand, two hundred seventy-nine".