11979239 has 2 divisors, whose sum is σ = 11979240. Its totient is φ = 11979238.

The previous prime is 11979173. The next prime is 11979263. The reversal of 11979239 is 93297911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11979239 - 2¹² = 11975143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11979196 and 11979205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11979269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5989619 + 5989620.

It is an arithmetic number, because the mean of its divisors is an integer number (5989620).

Almost surely, 2^11979239 is an apocalyptic number.

11979239 is a deficient number, since it is larger than the sum of its proper divisors (1).

11979239 is an equidigital number, since it uses as much as digits as its factorization.

11979239 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 11979239 is about 3461.1037256921. The cubic root of 11979239 is about 228.8107422276.

The spelling of 11979239 in words is "eleven million, nine hundred seventy-nine thousand, two hundred thirty-nine".