2289689 has 2 divisors, whose sum is σ = 2289690. Its totient is φ = 2289688.

The previous prime is 2289667. The next prime is 2289697. The reversal of 2289689 is 9869822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2274064 + 15625 = 1508^2 + 125^2 .

It is a cyclic number.

It is not a de Polignac number, because 2289689 - 2⁸ = 2289433 is a prime.

It is not a weakly prime, because it can be changed into another prime (2289649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1144844 + 1144845.

It is an arithmetic number, because the mean of its divisors is an integer number (1144845).

2^2289689 is an apocalyptic number.

It is an amenable number.

2289689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2289689 is an equidigital number, since it uses as much as digits as its factorization.

2289689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 44.

The square root of 2289689 is about 1513.1718342607. The cubic root of 2289689 is about 131.8030618481.

The spelling of 2289689 in words is "two million, two hundred eighty-nine thousand, six hundred eighty-nine".