223444973 has 2 divisors, whose sum is σ = 223444974. Its totient is φ = 223444972.

The previous prime is 223444967. The next prime is 223444999. The reversal of 223444973 is 379444322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221801449 + 1643524 = 14893^2 + 1282^2 .

It is a cyclic number.

It is not a de Polignac number, because 223444973 - 2⁸ = 223444717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223444673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111722486 + 111722487.

It is an arithmetic number, because the mean of its divisors is an integer number (111722487).

Almost surely, 2^223444973 is an apocalyptic number.

It is an amenable number.

223444973 is a deficient number, since it is larger than the sum of its proper divisors (1).

223444973 is an equidigital number, since it uses as much as digits as its factorization.

223444973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 38.

The square root of 223444973 is about 14948.0758962483. The cubic root of 223444973 is about 606.8157756832.

The spelling of 223444973 in words is "two hundred twenty-three million, four hundred forty-four thousand, nine hundred seventy-three".