11240209 has 2 divisors, whose sum is σ = 11240210. Its totient is φ = 11240208.

The previous prime is 11240183. The next prime is 11240219. The reversal of 11240209 is 90204211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7139584 + 4100625 = 2672^2 + 2025^2 .

It is a cyclic number.

It is not a de Polignac number, because 11240209 - 2¹³ = 11232017 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11240219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5620104 + 5620105.

It is an arithmetic number, because the mean of its divisors is an integer number (5620105).

Almost surely, 2^11240209 is an apocalyptic number.

It is an amenable number.

11240209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11240209 is an equidigital number, since it uses as much as digits as its factorization.

11240209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 11240209 is about 3352.6420924399. The cubic root of 11240209 is about 224.0052148552.

It can be divided in two parts, 11240 and 209, that added together give a square (11449 = 107²).

The spelling of 11240209 in words is "eleven million, two hundred forty thousand, two hundred nine".