223688443 has 4 divisors (see below), whose sum is σ = 244023768. Its totient is φ = 203353120.

The previous prime is 223688441. The next prime is 223688503. The reversal of 223688443 is 344886322.

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 223688443 - 2¹ = 223688441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223688396 and 223688405.

It is not an unprimeable number, because it can be changed into a prime (223688441) 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, 10167646 + ... + 10167667.

It is an arithmetic number, because the mean of its divisors is an integer number (61005942).

Almost surely, 2^223688443 is an apocalyptic number.

223688443 is a deficient number, since it is larger than the sum of its proper divisors (20335325).

223688443 is a wasteful number, since it uses less digits than its factorization.

223688443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20335324.

The product of its digits is 221184, while the sum is 40.

The square root of 223688443 is about 14956.2175365297. The cubic root of 223688443 is about 607.0360951153.

The spelling of 223688443 in words is "two hundred twenty-three million, six hundred eighty-eight thousand, four hundred forty-three".