11044312009 has 2 divisors, whose sum is σ = 11044312010. Its totient is φ = 11044312008.

The previous prime is 11044311979. The next prime is 11044312033. The reversal of 11044312009 is 90021344011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8722999609 + 2321312400 = 93397^2 + 48180^2 .

It is a cyclic number.

It is not a de Polignac number, because 11044312009 - 2¹⁷ = 11044180937 is a prime.

It is not a weakly prime, because it can be changed into another prime (11044312079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5522156004 + 5522156005.

It is an arithmetic number, because the mean of its divisors is an integer number (5522156005).

Almost surely, 2^11044312009 is an apocalyptic number.

It is an amenable number.

11044312009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11044312009 is an equidigital number, since it uses as much as digits as its factorization.

11044312009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 11044312009 in words is "eleven billion, forty-four million, three hundred twelve thousand, nine".