8111911 has 2 divisors, whose sum is σ = 8111912. Its totient is φ = 8111910.

The previous prime is 8111903. The next prime is 8111923. The reversal of 8111911 is 1191118.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8111911 - 2³ = 8111903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8111981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4055955 + 4055956.

It is an arithmetic number, because the mean of its divisors is an integer number (4055956).

Almost surely, 2^8111911 is an apocalyptic number.

8111911 is a deficient number, since it is larger than the sum of its proper divisors (1).

8111911 is an equidigital number, since it uses as much as digits as its factorization.

8111911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 22.

The square root of 8111911 is about 2848.1416748470. The cubic root of 8111911 is about 200.9282765145.

The spelling of 8111911 in words is "eight million, one hundred eleven thousand, nine hundred eleven".