11070809 has 4 divisors (see below), whose sum is σ = 11127204. Its totient is φ = 11014416.

The previous prime is 11070781. The next prime is 11070821. The reversal of 11070809 is 90807011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5175625 + 5895184 = 2275^2 + 2428^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11070809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11070869) 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 in 3 ways as a sum of consecutive naturals, for example, 27902 + ... + 28295.

It is an arithmetic number, because the mean of its divisors is an integer number (2781801).

Almost surely, 2^11070809 is an apocalyptic number.

It is an amenable number.

11070809 is a deficient number, since it is larger than the sum of its proper divisors (56395).

11070809 is an equidigital number, since it uses as much as digits as its factorization.

11070809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56394.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 11070809 is about 3327.2825248241. The cubic root of 11070809 is about 222.8741942238.

The spelling of 11070809 in words is "eleven million, seventy thousand, eight hundred nine".