2189447 has 8 divisors (see below), whose sum is σ = 2496816. Its totient is φ = 1901952.

The previous prime is 2189419. The next prime is 2189459. The reversal of 2189447 is 7449812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2189447 - 2²⁰ = 1140871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4733 + ... + 5174.

It is an arithmetic number, because the mean of its divisors is an integer number (312102).

2^2189447 is an apocalyptic number.

2189447 is a deficient number, since it is larger than the sum of its proper divisors (307369).

2189447 is a wasteful number, since it uses less digits than its factorization.

2189447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9937.

The product of its digits is 16128, while the sum is 35.

The square root of 2189447 is about 1479.6780055134. The cubic root of 2189447 is about 129.8508545961.

The spelling of 2189447 in words is "two million, one hundred eighty-nine thousand, four hundred forty-seven".