11000009 has 4 divisors (see below), whose sum is σ = 11354880. Its totient is φ = 10645140.

The previous prime is 10999997. The next prime is 11000027. The reversal of 11000009 is 90000011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90000011 = 6733 ⋅13367.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11000009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11000089) 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, 177389 + ... + 177450.

It is an arithmetic number, because the mean of its divisors is an integer number (2838720).

Almost surely, 2^11000009 is an apocalyptic number.

It is an amenable number.

11000009 is a deficient number, since it is larger than the sum of its proper divisors (354871).

11000009 is an equidigital number, since it uses as much as digits as its factorization.

11000009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354870.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 11000009 is about 3316.6261471562. The cubic root of 11000009 is about 222.3980697109.

The spelling of 11000009 in words is "eleven million, nine", and thus it is an aban number and an uban number.