4644444223 has 4 divisors (see below), whose sum is σ = 4668020280. Its totient is φ = 4620868168.

The previous prime is 4644444157. The next prime is 4644444239. The reversal of 4644444223 is 3224444464.

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 4644444223 - 2¹³ = 4644436031 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 (4644444323) 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, 11787733 + ... + 11788126.

It is an arithmetic number, because the mean of its divisors is an integer number (1167005070).

Almost surely, 2^4644444223 is an apocalyptic number.

4644444223 is a deficient number, since it is larger than the sum of its proper divisors (23576057).

4644444223 is a wasteful number, since it uses less digits than its factorization.

4644444223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23576056.

The product of its digits is 294912, while the sum is 37.

The square root of 4644444223 is about 68150.1593761893. The cubic root of 4644444223 is about 1668.4425249954.

Adding to 4644444223 its reverse (3224444464), we get a palindrome (7868888687).

The spelling of 4644444223 in words is "four billion, six hundred forty-four million, four hundred forty-four thousand, two hundred twenty-three".