222944549 has 2 divisors, whose sum is σ = 222944550. Its totient is φ = 222944548.

The previous prime is 222944531. The next prime is 222944587. The reversal of 222944549 is 945449222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179292100 + 43652449 = 13390^2 + 6607^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222944549 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 (222944599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111472274 + 111472275.

It is an arithmetic number, because the mean of its divisors is an integer number (111472275).

Almost surely, 2^222944549 is an apocalyptic number.

It is an amenable number.

222944549 is a deficient number, since it is larger than the sum of its proper divisors (1).

222944549 is an equidigital number, since it uses as much as digits as its factorization.

222944549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 41.

The square root of 222944549 is about 14931.3277708314. The cubic root of 222944549 is about 606.3624319199.

The spelling of 222944549 in words is "two hundred twenty-two million, nine hundred forty-four thousand, five hundred forty-nine".