2216443 has 4 divisors (see below), whose sum is σ = 2346840. Its totient is φ = 2086048.

The previous prime is 2216437. The next prime is 2216471. The reversal of 2216443 is 3446122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2216443 - 2⁹ = 2215931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2216413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65173 + ... + 65206.

It is an arithmetic number, because the mean of its divisors is an integer number (586710).

2^2216443 is an apocalyptic number.

2216443 is a deficient number, since it is larger than the sum of its proper divisors (130397).

2216443 is a wasteful number, since it uses less digits than its factorization.

2216443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130396.

The product of its digits is 1152, while the sum is 22.

The square root of 2216443 is about 1488.7723130150. The cubic root of 2216443 is about 130.3823653810.

The spelling of 2216443 in words is "two million, two hundred sixteen thousand, four hundred forty-three".