11909279 has 2 divisors, whose sum is σ = 11909280. Its totient is φ = 11909278.

The previous prime is 11909267. The next prime is 11909281. The reversal of 11909279 is 97290911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11909279 - 2⁴ = 11909263 is a prime.

Together with 11909281, 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 (11909479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5954639 + 5954640.

It is an arithmetic number, because the mean of its divisors is an integer number (5954640).

Almost surely, 2^11909279 is an apocalyptic number.

11909279 is a deficient number, since it is larger than the sum of its proper divisors (1).

11909279 is an equidigital number, since it uses as much as digits as its factorization.

11909279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 38.

The square root of 11909279 is about 3450.9823239188. The cubic root of 11909279 is about 228.3644461247.

The spelling of 11909279 in words is "eleven million, nine hundred nine thousand, two hundred seventy-nine".