11108809 has 2 divisors, whose sum is σ = 11108810. Its totient is φ = 11108808.

The previous prime is 11108807. The next prime is 11108813. The reversal of 11108809 is 90880111.

11108809 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6996025 + 4112784 = 2645^2 + 2028^2 .

It is a cyclic number.

It is not a de Polignac number, because 11108809 - 2¹ = 11108807 is a prime.

Together with 11108807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11108807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5554404 + 5554405.

It is an arithmetic number, because the mean of its divisors is an integer number (5554405).

Almost surely, 2^11108809 is an apocalyptic number.

It is an amenable number.

11108809 is a deficient number, since it is larger than the sum of its proper divisors (1).

11108809 is an equidigital number, since it uses as much as digits as its factorization.

11108809 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 28.

The square root of 11108809 is about 3332.9879987783. The cubic root of 11108809 is about 223.1289045393.

The spelling of 11108809 in words is "eleven million, one hundred eight thousand, eight hundred nine".