222345779 has 2 divisors, whose sum is σ = 222345780. Its totient is φ = 222345778.

The previous prime is 222345769. The next prime is 222345811. The reversal of 222345779 is 977543222.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222345779 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (222345709) 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, 111172889 + 111172890.

It is an arithmetic number, because the mean of its divisors is an integer number (111172890).

Almost surely, 2^222345779 is an apocalyptic number.

222345779 is a deficient number, since it is larger than the sum of its proper divisors (1).

222345779 is an equidigital number, since it uses as much as digits as its factorization.

222345779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 41.

The square root of 222345779 is about 14911.2634944192. The cubic root of 222345779 is about 605.8191022609.

The spelling of 222345779 in words is "two hundred twenty-two million, three hundred forty-five thousand, seven hundred seventy-nine".