2289289 has 4 divisors (see below), whose sum is σ = 2368260. Its totient is φ = 2210320.

The previous prime is 2289281. The next prime is 2289349. The reversal of 2289289 is 9829822.

It is a happy number.

2289289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9829822 = 2 ⋅4914911.

It can be written as a sum of positive squares in 2 ways, for example, as 751689 + 1537600 = 867^2 + 1240^2 .

It is a cyclic number.

It is not a de Polignac number, because 2289289 - 2³ = 2289281 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2289281) 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 3 ways as a sum of consecutive naturals, for example, 39442 + ... + 39499.

It is an arithmetic number, because the mean of its divisors is an integer number (592065).

2^2289289 is an apocalyptic number.

2289289 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2289289 is a deficient number, since it is larger than the sum of its proper divisors (78971).

2289289 is an equidigital number, since it uses as much as digits as its factorization.

2289289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78970.

The product of its digits is 41472, while the sum is 40.

The square root of 2289289 is about 1513.0396557923. The cubic root of 2289289 is about 131.7953862358.

The spelling of 2289289 in words is "two million, two hundred eighty-nine thousand, two hundred eighty-nine".