2289641 has 2 divisors, whose sum is σ = 2289642. Its totient is φ = 2289640.

The previous prime is 2289601. The next prime is 2289643. The reversal of 2289641 is 1469822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2019241 + 270400 = 1421^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 2289641 - 2¹⁸ = 2027497 is a prime.

It is a Sophie Germain prime.

Together with 2289643, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2289598 and 2289607.

It is not a weakly prime, because it can be changed into another prime (2289643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1144820 + 1144821.

It is an arithmetic number, because the mean of its divisors is an integer number (1144821).

2^2289641 is an apocalyptic number.

It is an amenable number.

2289641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2289641 is an equidigital number, since it uses as much as digits as its factorization.

2289641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 32.

The square root of 2289641 is about 1513.1559734542. The cubic root of 2289641 is about 131.8021408218.

The spelling of 2289641 in words is "two million, two hundred eighty-nine thousand, six hundred forty-one".