2209289 has 2 divisors, whose sum is σ = 2209290. Its totient is φ = 2209288.

The previous prime is 2209283. The next prime is 2209313. The reversal of 2209289 is 9829022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2199289 + 10000 = 1483^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 2209289 - 2¹⁶ = 2143753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2209283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1104644 + 1104645.

It is an arithmetic number, because the mean of its divisors is an integer number (1104645).

2^2209289 is an apocalyptic number.

It is an amenable number.

2209289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2209289 is an equidigital number, since it uses as much as digits as its factorization.

2209289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 2209289 is about 1486.3677203169. The cubic root of 2209289 is about 130.2419360542.

It can be divided in two parts, 2209 and 289, that multiplied together give a square (638401 = 799²).

The spelling of 2209289 in words is "two million, two hundred nine thousand, two hundred eighty-nine".