222646439 has 2 divisors, whose sum is σ = 222646440. Its totient is φ = 222646438.

The previous prime is 222646409. The next prime is 222646469. The reversal of 222646439 is 934646222.

It is a balanced prime because it is at equal distance from previous prime (222646409) and next prime (222646469).

It is a cyclic number.

It is not a de Polignac number, because 222646439 - 2²⁰ = 221597863 is a prime.

It is a Sophie Germain 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 (222646409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111323219 + 111323220.

It is an arithmetic number, because the mean of its divisors is an integer number (111323220).

Almost surely, 2^222646439 is an apocalyptic number.

222646439 is a deficient number, since it is larger than the sum of its proper divisors (1).

222646439 is an equidigital number, since it uses as much as digits as its factorization.

222646439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 38.

The square root of 222646439 is about 14921.3417292146. The cubic root of 222646439 is about 606.0920458019.

The spelling of 222646439 in words is "two hundred twenty-two million, six hundred forty-six thousand, four hundred thirty-nine".