222779 has 2 divisors, whose sum is σ = 222780.
Its totient is φ = 222778.
The previous prime is 222773. The next prime is 222787. The reversal of 222779 is 977222.
It can be divided in two parts, 222 and 779, that added together give a palindrome (1001).
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 222779 - 216 = 157243 is a prime.
It is a Chen prime.
It is a pancake number, because a pancake can be divided into 222779 parts by 667 straight cuts.
It is a plaindrome in base 10.
It is not a weakly prime, because it can be changed into another prime (222773) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111389 + 111390.
It is an arithmetic number, because the mean of its divisors is an integer number (111390).
2222779 is an apocalyptic number.
222779 is a deficient number, since it is larger than the sum of its proper divisors (1).
222779 is an equidigital number, since it uses as much as digits as its factorization.
222779 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 3528, while the sum is 29.
The square root of 222779 is about 471.9947033601.
The cubic root of 222779 is about 60.6212308565.
The spelling of 222779 in words is "two hundred twenty-two thousand, seven hundred seventy-nine".