223444409 has 2 divisors, whose sum is σ = 223444410. Its totient is φ = 223444408.

The previous prime is 223444393. The next prime is 223444453. The reversal of 223444409 is 904444322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210685225 + 12759184 = 14515^2 + 3572^2 .

It is a cyclic number.

It is not a de Polignac number, because 223444409 - 2⁴ = 223444393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (223444489) 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, 111722204 + 111722205.

It is an arithmetic number, because the mean of its divisors is an integer number (111722205).

Almost surely, 2^223444409 is an apocalyptic number.

It is an amenable number.

223444409 is a deficient number, since it is larger than the sum of its proper divisors (1).

223444409 is an equidigital number, since it uses as much as digits as its factorization.

223444409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 223444409 is about 14948.0570309321. The cubic root of 223444409 is about 606.8152651259.

The spelling of 223444409 in words is "two hundred twenty-three million, four hundred forty-four thousand, four hundred nine".