11979287 has 2 divisors, whose sum is σ = 11979288. Its totient is φ = 11979286.

The previous prime is 11979277. The next prime is 11979293. The reversal of 11979287 is 78297911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11979287 - 2²² = 7784983 is a 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 (11979277) 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, 5989643 + 5989644.

It is an arithmetic number, because the mean of its divisors is an integer number (5989644).

Almost surely, 2^11979287 is an apocalyptic number.

11979287 is a deficient number, since it is larger than the sum of its proper divisors (1).

11979287 is an equidigital number, since it uses as much as digits as its factorization.

11979287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 44.

The square root of 11979287 is about 3461.1106598894. The cubic root of 11979287 is about 228.8110478369.

The spelling of 11979287 in words is "eleven million, nine hundred seventy-nine thousand, two hundred eighty-seven".