222445679 has 2 divisors, whose sum is σ = 222445680. Its totient is φ = 222445678.

The previous prime is 222445661. The next prime is 222445703. The reversal of 222445679 is 976544222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222445679 - 2⁸ = 222445423 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222445609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111222839 + 111222840.

It is an arithmetic number, because the mean of its divisors is an integer number (111222840).

Almost surely, 2^222445679 is an apocalyptic number.

222445679 is a deficient number, since it is larger than the sum of its proper divisors (1).

222445679 is an equidigital number, since it uses as much as digits as its factorization.

222445679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 41.

The square root of 222445679 is about 14914.6129349709. The cubic root of 222445679 is about 605.9098202210.

The spelling of 222445679 in words is "two hundred twenty-two million, four hundred forty-five thousand, six hundred seventy-nine".