2223449 has 2 divisors, whose sum is σ = 2223450. Its totient is φ = 2223448.

The previous prime is 2223443. The next prime is 2223451. The reversal of 2223449 is 9443222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2088025 + 135424 = 1445^2 + 368^2 .

It is a cyclic number.

It is not a de Polignac number, because 2223449 - 2¹² = 2219353 is a prime.

It is a Sophie Germain prime.

Together with 2223451, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (2223443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111724 + 1111725.

It is an arithmetic number, because the mean of its divisors is an integer number (1111725).

2^2223449 is an apocalyptic number.

It is an amenable number.

2223449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2223449 is an equidigital number, since it uses as much as digits as its factorization.

2223449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 26.

The square root of 2223449 is about 1491.1234020027. The cubic root of 2223449 is about 130.5195969846.

The spelling of 2223449 in words is "two million, two hundred twenty-three thousand, four hundred forty-nine".