11285009 has 2 divisors, whose sum is σ = 11285010. Its totient is φ = 11285008.

The previous prime is 11284981. The next prime is 11285017. The reversal of 11285009 is 90058211.

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., 9784384 + 1500625 = 3128^2 + 1225^2 .

It is a cyclic number.

It is not a de Polignac number, because 11285009 - 2²⁰ = 10236433 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11285509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5642504 + 5642505.

It is an arithmetic number, because the mean of its divisors is an integer number (5642505).

Almost surely, 2^11285009 is an apocalyptic number.

It is an amenable number.

11285009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11285009 is an equidigital number, since it uses as much as digits as its factorization.

11285009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 11285009 is about 3359.3167460065. The cubic root of 11285009 is about 224.3024255315.

The spelling of 11285009 in words is "eleven million, two hundred eighty-five thousand, nine".