2287209 has 8 divisors (see below), whose sum is σ = 3058272. Its totient is φ = 1520480.

The previous prime is 2287199. The next prime is 2287223. The reversal of 2287209 is 9027822.

2287209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2287209 - 2⁴ = 2287193 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2287249) 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 in 7 ways as a sum of consecutive naturals, for example, 469 + ... + 2189.

It is an arithmetic number, because the mean of its divisors is an integer number (382284).

2^2287209 is an apocalyptic number.

It is an amenable number.

2287209 is a deficient number, since it is larger than the sum of its proper divisors (771063).

2287209 is a wasteful number, since it uses less digits than its factorization.

2287209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2167.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 2287209 is about 1512.3521415332. The cubic root of 2287209 is about 131.7554586324.

The spelling of 2287209 in words is "two million, two hundred eighty-seven thousand, two hundred nine".