444544223423 has 4 divisors (see below), whose sum is σ = 444548003928. Its totient is φ = 444540442920.

The previous prime is 444544223419. The next prime is 444544223447. The reversal of 444544223423 is 324322445444.

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 444544223423 - 2² = 444544223419 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 (444544223413) 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, 1708013 + ... + 1950998.

It is an arithmetic number, because the mean of its divisors is an integer number (111137000982).

Almost surely, 2^444544223423 is an apocalyptic number.

444544223423 is a deficient number, since it is larger than the sum of its proper divisors (3780505).

444544223423 is a wasteful number, since it uses less digits than its factorization.

444544223423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780504.

The product of its digits is 1474560, while the sum is 41.

Adding to 444544223423 its reverse (324322445444), we get a palindrome (768866668867).

The spelling of 444544223423 in words is "four hundred forty-four billion, five hundred forty-four million, two hundred twenty-three thousand, four hundred twenty-three".