223844813 has 2 divisors, whose sum is σ = 223844814. Its totient is φ = 223844812.

The previous prime is 223844801. The next prime is 223844827. The reversal of 223844813 is 318448322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167624809 + 56220004 = 12947^2 + 7498^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223844813 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223844213) 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 as a sum of consecutive naturals, namely, 111922406 + 111922407.

It is an arithmetic number, because the mean of its divisors is an integer number (111922407).

Almost surely, 2^223844813 is an apocalyptic number.

It is an amenable number.

223844813 is a deficient number, since it is larger than the sum of its proper divisors (1).

223844813 is an equidigital number, since it uses as much as digits as its factorization.

223844813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 35.

The square root of 223844813 is about 14961.4442150482. Note that the first 3 decimals coincide. The cubic root of 223844813 is about 607.1775122325.

The spelling of 223844813 in words is "two hundred twenty-three million, eight hundred forty-four thousand, eight hundred thirteen".