223445689 has 2 divisors, whose sum is σ = 223445690. Its totient is φ = 223445688.

The previous prime is 223445683. The next prime is 223445741. The reversal of 223445689 is 986544322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160909225 + 62536464 = 12685^2 + 7908^2 .

It is a cyclic number.

It is not a de Polignac number, because 223445689 - 2⁹ = 223445177 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (223445683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111722844 + 111722845.

It is an arithmetic number, because the mean of its divisors is an integer number (111722845).

Almost surely, 2^223445689 is an apocalyptic number.

It is an amenable number.

223445689 is a deficient number, since it is larger than the sum of its proper divisors (1).

223445689 is an equidigital number, since it uses as much as digits as its factorization.

223445689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 43.

The square root of 223445689 is about 14948.0998457998. The cubic root of 223445689 is about 606.8164238362.

The spelling of 223445689 in words is "two hundred twenty-three million, four hundred forty-five thousand, six hundred eighty-nine".