2289889 has 4 divisors (see below), whose sum is σ = 2617024. Its totient is φ = 1962756.

The previous prime is 2289871. The next prime is 2289901. The reversal of 2289889 is 9889822.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9889822 = 2 ⋅4944911.

It is a cyclic number.

It is not a de Polignac number, because 2289889 - 2⁷ = 2289761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2289829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163557 + ... + 163570.

It is an arithmetic number, because the mean of its divisors is an integer number (654256).

2^2289889 is an apocalyptic number.

It is an amenable number.

2289889 is a deficient number, since it is larger than the sum of its proper divisors (327135).

2289889 is an equidigital number, since it uses as much as digits as its factorization.

2289889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327134.

The product of its digits is 165888, while the sum is 46.

The square root of 2289889 is about 1513.2379191654. The cubic root of 2289889 is about 131.8068993190.

The spelling of 2289889 in words is "two million, two hundred eighty-nine thousand, eight hundred eighty-nine".