11811089 has 2 divisors, whose sum is σ = 11811090. Its totient is φ = 11811088.

The previous prime is 11811083. The next prime is 11811097. The reversal of 11811089 is 98011811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11785489 + 25600 = 3433^2 + 160^2 .

It is a cyclic number.

It is not a de Polignac number, because 11811089 - 2⁸ = 11810833 is a prime.

It is not a weakly prime, because it can be changed into another prime (11811083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5905544 + 5905545.

It is an arithmetic number, because the mean of its divisors is an integer number (5905545).

Almost surely, 2^11811089 is an apocalyptic number.

It is an amenable number.

11811089 is a deficient number, since it is larger than the sum of its proper divisors (1).

11811089 is an equidigital number, since it uses as much as digits as its factorization.

11811089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 29.

The square root of 11811089 is about 3436.7264947912. The cubic root of 11811089 is about 227.7351045359.

The spelling of 11811089 in words is "eleven million, eight hundred eleven thousand, eighty-nine".