222288439 has 2 divisors, whose sum is σ = 222288440. Its totient is φ = 222288438.

The previous prime is 222288397. The next prime is 222288449. The reversal of 222288439 is 934882222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222288439 - 2¹¹ = 222286391 is a prime.

It is a super-2 number, since 2×222288439² = 98824300226113442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222288449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111144219 + 111144220.

It is an arithmetic number, because the mean of its divisors is an integer number (111144220).

Almost surely, 2^222288439 is an apocalyptic number.

222288439 is a deficient number, since it is larger than the sum of its proper divisors (1).

222288439 is an equidigital number, since it uses as much as digits as its factorization.

222288439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110592, while the sum is 40.

The square root of 222288439 is about 14909.3406628194. The cubic root of 222288439 is about 605.7670202380.

The spelling of 222288439 in words is "two hundred twenty-two million, two hundred eighty-eight thousand, four hundred thirty-nine".