2287289 has 2 divisors, whose sum is σ = 2287290. Its totient is φ = 2287288.

The previous prime is 2287283. The next prime is 2287291. The reversal of 2287289 is 9827822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2274064 + 13225 = 1508^2 + 115^2 .

It is a cyclic number.

It is not a de Polignac number, because 2287289 - 2¹⁶ = 2221753 is a prime.

Together with 2287291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2287283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1143644 + 1143645.

It is an arithmetic number, because the mean of its divisors is an integer number (1143645).

2^2287289 is an apocalyptic number.

It is an amenable number.

2287289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2287289 is an equidigital number, since it uses as much as digits as its factorization.

2287289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 38.

The square root of 2287289 is about 1512.3785901685. The cubic root of 2287289 is about 131.7569947570.

The spelling of 2287289 in words is "two million, two hundred eighty-seven thousand, two hundred eighty-nine".