223243444 has 12 divisors (see below), whose sum is σ = 399761824. Its totient is φ = 109025784.

The previous prime is 223243411. The next prime is 223243457. The reversal of 223243444 is 444342322.

It is a happy number.

223243444 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×223243444³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648792 + ... + 649135.

Almost surely, 2^223243444 is an apocalyptic number.

It is an amenable number.

223243444 is a deficient number, since it is larger than the sum of its proper divisors (176518380).

223243444 is a wasteful number, since it uses less digits than its factorization.

223243444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297974 (or 1297972 counting only the distinct ones).

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

The square root of 223243444 is about 14941.3334076983. Note that the first 3 decimals coincide. The cubic root of 223243444 is about 606.6332881581.

Adding to 223243444 its reverse (444342322), we get a palindrome (667585766).

The spelling of 223243444 in words is "two hundred twenty-three million, two hundred forty-three thousand, four hundred forty-four".