11204009 has 2 divisors, whose sum is σ = 11204010. Its totient is φ = 11204008.

The previous prime is 11203993. The next prime is 11204023. The reversal of 11204009 is 90040211.

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., 11202409 + 1600 = 3347^2 + 40^2 .

It is a cyclic number.

It is not a de Polignac number, because 11204009 - 2⁴ = 11203993 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11204909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5602004 + 5602005.

It is an arithmetic number, because the mean of its divisors is an integer number (5602005).

Almost surely, 2^11204009 is an apocalyptic number.

It is an amenable number.

11204009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11204009 is an equidigital number, since it uses as much as digits as its factorization.

11204009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 11204009 is about 3347.2390114839. The cubic root of 11204009 is about 223.7644806125.

The spelling of 11204009 in words is "eleven million, two hundred four thousand, nine".