223989823 has 16 divisors (see below), whose sum is σ = 239400000. Its totient is φ = 209164032.

The previous prime is 223989809. The next prime is 223989839. The reversal of 223989823 is 328989322.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 223989823 - 2¹³ = 223981631 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 (223989863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213003 + ... + 214051.

It is an arithmetic number, because the mean of its divisors is an integer number (14962500).

Almost surely, 2^223989823 is an apocalyptic number.

223989823 is a deficient number, since it is larger than the sum of its proper divisors (15410177).

223989823 is a wasteful number, since it uses less digits than its factorization.

223989823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314.

The product of its digits is 373248, while the sum is 46.

The square root of 223989823 is about 14966.2895535266. The cubic root of 223989823 is about 607.3085968055.

The spelling of 223989823 in words is "two hundred twenty-three million, nine hundred eighty-nine thousand, eight hundred twenty-three".