223444423 has 4 divisors (see below), whose sum is σ = 224944200. Its totient is φ = 221944648.

The previous prime is 223444409. The next prime is 223444453. The reversal of 223444423 is 324444322.

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 223444423 - 2¹³ = 223436231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223444391 and 223444400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223444453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749665 + ... + 749962.

It is an arithmetic number, because the mean of its divisors is an integer number (56236050).

Almost surely, 2^223444423 is an apocalyptic number.

223444423 is a deficient number, since it is larger than the sum of its proper divisors (1499777).

223444423 is a wasteful number, since it uses less digits than its factorization.

223444423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499776.

The product of its digits is 18432, while the sum is 28.

The square root of 223444423 is about 14948.0574992204. The cubic root of 223444423 is about 606.8152777993.

Adding to 223444423 its reverse (324444322), we get a palindrome (547888745).

The spelling of 223444423 in words is "two hundred twenty-three million, four hundred forty-four thousand, four hundred twenty-three".