11117009 has 4 divisors (see below), whose sum is σ = 11138100. Its totient is φ = 11095920.

The previous prime is 11116999. The next prime is 11117011. The reversal of 11117009 is 90071111.

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 8427409 + 2689600 = 2903^2 + 1640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11117009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11147009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9734 + ... + 10815.

It is an arithmetic number, because the mean of its divisors is an integer number (2784525).

Almost surely, 2^11117009 is an apocalyptic number.

It is an amenable number.

11117009 is a deficient number, since it is larger than the sum of its proper divisors (21091).

11117009 is an equidigital number, since it uses as much as digits as its factorization.

11117009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21090.

The product of its (nonzero) digits is 63, while the sum is 20.

The square root of 11117009 is about 3334.2178992981. The cubic root of 11117009 is about 223.1837921218.

The spelling of 11117009 in words is "eleven million, one hundred seventeen thousand, nine".