11868911 has 2 divisors, whose sum is σ = 11868912. Its totient is φ = 11868910.

The previous prime is 11868869. The next prime is 11868929. The reversal of 11868911 is 11986811.

It is a strong prime.

It is an emirp because it is prime and its reverse (11986811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11868911 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 (11868211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5934455 + 5934456.

It is an arithmetic number, because the mean of its divisors is an integer number (5934456).

Almost surely, 2^11868911 is an apocalyptic number.

11868911 is a deficient number, since it is larger than the sum of its proper divisors (1).

11868911 is an equidigital number, since it uses as much as digits as its factorization.

11868911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 35.

The square root of 11868911 is about 3445.1285897627. The cubic root of 11868911 is about 228.1061306967.

The spelling of 11868911 in words is "eleven million, eight hundred sixty-eight thousand, nine hundred eleven".