222443729 has 2 divisors, whose sum is σ = 222443730. Its totient is φ = 222443728.

The previous prime is 222443707. The next prime is 222443731. The reversal of 222443729 is 927344222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162613504 + 59830225 = 12752^2 + 7735^2 .

It is a cyclic number.

It is not a de Polignac number, because 222443729 - 2¹⁶ = 222378193 is a prime.

Together with 222443731, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (222443789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111221864 + 111221865.

It is an arithmetic number, because the mean of its divisors is an integer number (111221865).

Almost surely, 2^222443729 is an apocalyptic number.

It is an amenable number.

222443729 is a deficient number, since it is larger than the sum of its proper divisors (1).

222443729 is an equidigital number, since it uses as much as digits as its factorization.

222443729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 35.

The square root of 222443729 is about 14914.5475626986. The cubic root of 222443729 is about 605.9080497099.

The spelling of 222443729 in words is "two hundred twenty-two million, four hundred forty-three thousand, seven hundred twenty-nine".