2189644 has 6 divisors (see below), whose sum is σ = 3831884. Its totient is φ = 1094820.

The previous prime is 2189639. The next prime is 2189647. The reversal of 2189644 is 4469812.

It is not an unprimeable number, because it can be changed into a prime (2189647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273702 + ... + 273709.

2^2189644 is an apocalyptic number.

It is an amenable number.

2189644 is a deficient number, since it is larger than the sum of its proper divisors (1642240).

2189644 is a wasteful number, since it uses less digits than its factorization.

2189644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547415 (or 547413 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 2189644 is about 1479.7445725530. The cubic root of 2189644 is about 129.8547490119.

The spelling of 2189644 in words is "two million, one hundred eighty-nine thousand, six hundred forty-four".