11189771 has 2 divisors, whose sum is σ = 11189772. Its totient is φ = 11189770.

The previous prime is 11189767. The next prime is 11189777. The reversal of 11189771 is 17798111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11189771 - 2² = 11189767 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11189777) 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, 5594885 + 5594886.

It is an arithmetic number, because the mean of its divisors is an integer number (5594886).

Almost surely, 2^11189771 is an apocalyptic number.

11189771 is a deficient number, since it is larger than the sum of its proper divisors (1).

11189771 is an equidigital number, since it uses as much as digits as its factorization.

11189771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 35.

The square root of 11189771 is about 3345.1115078574. Note that the first 3 decimals coincide. The cubic root of 11189771 is about 223.6696541626.

The spelling of 11189771 in words is "eleven million, one hundred eighty-nine thousand, seven hundred seventy-one".