222427649 has 2 divisors, whose sum is σ = 222427650. Its totient is φ = 222427648.

The previous prime is 222427637. The next prime is 222427679. The reversal of 222427649 is 946724222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209236225 + 13191424 = 14465^2 + 3632^2 .

It is a cyclic number.

It is not a de Polignac number, because 222427649 - 2⁸ = 222427393 is a prime.

It is not a weakly prime, because it can be changed into another prime (222427679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111213824 + 111213825.

It is an arithmetic number, because the mean of its divisors is an integer number (111213825).

Almost surely, 2^222427649 is an apocalyptic number.

It is an amenable number.

222427649 is a deficient number, since it is larger than the sum of its proper divisors (1).

222427649 is an equidigital number, since it uses as much as digits as its factorization.

222427649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 38.

The square root of 222427649 is about 14914.0084819608. The cubic root of 222427649 is about 605.8934494089.

The spelling of 222427649 in words is "two hundred twenty-two million, four hundred twenty-seven thousand, six hundred forty-nine".