11162009 has 2 divisors, whose sum is σ = 11162010. Its totient is φ = 11162008.

The previous prime is 11161993. The next prime is 11162029. The reversal of 11162009 is 90026111.

It is an a-pointer prime, because the next prime (11162029) can be obtained adding 11162009 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7728400 + 3433609 = 2780^2 + 1853^2 .

It is a cyclic number.

It is not a de Polignac number, because 11162009 - 2⁴ = 11161993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11162029) 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 as a sum of consecutive naturals, namely, 5581004 + 5581005.

It is an arithmetic number, because the mean of its divisors is an integer number (5581005).

Almost surely, 2^11162009 is an apocalyptic number.

It is an amenable number.

11162009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11162009 is an equidigital number, since it uses as much as digits as its factorization.

11162009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 11162009 is about 3340.9592933767. The cubic root of 11162009 is about 223.4845249843.

It can be divided in two parts, 1116 and 2009, that added together give a 5-th power (3125 = 5⁵).

The spelling of 11162009 in words is "eleven million, one hundred sixty-two thousand, nine".