223929943 has 2 divisors, whose sum is σ = 223929944. Its totient is φ = 223929942.

The previous prime is 223929919. The next prime is 223929947. The reversal of 223929943 is 349929322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223929943 - 2²⁵ = 190375511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 223929943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223929947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111964971 + 111964972.

It is an arithmetic number, because the mean of its divisors is an integer number (111964972).

Almost surely, 2^223929943 is an apocalyptic number.

223929943 is a deficient number, since it is larger than the sum of its proper divisors (1).

223929943 is an equidigital number, since it uses as much as digits as its factorization.

223929943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 43.

The square root of 223929943 is about 14964.2889239683. The cubic root of 223929943 is about 607.2544739896.

The spelling of 223929943 in words is "two hundred twenty-three million, nine hundred twenty-nine thousand, nine hundred forty-three".