8644223 has 4 divisors (see below), whose sum is σ = 9879120. Its totient is φ = 7409328.

The previous prime is 8644213. The next prime is 8644231. The reversal of 8644223 is 3224468.

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 8644223 - 2¹⁰ = 8643199 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 (8644213) 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, 617438 + ... + 617451.

It is an arithmetic number, because the mean of its divisors is an integer number (2469780).

Almost surely, 2^8644223 is an apocalyptic number.

8644223 is a deficient number, since it is larger than the sum of its proper divisors (1234897).

8644223 is a wasteful number, since it uses less digits than its factorization.

8644223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234896.

The product of its digits is 9216, while the sum is 29.

The square root of 8644223 is about 2940.1059504719. The cubic root of 8644223 is about 205.2305397689.

The spelling of 8644223 in words is "eight million, six hundred forty-four thousand, two hundred twenty-three".