222799897 has 2 divisors, whose sum is σ = 222799898. Its totient is φ = 222799896.

The previous prime is 222799891. The next prime is 222799901. The reversal of 222799897 is 798997222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143304841 + 79495056 = 11971^2 + 8916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222799897 is a prime.

It is not a weakly prime, because it can be changed into another prime (222799891) 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, 111399948 + 111399949.

It is an arithmetic number, because the mean of its divisors is an integer number (111399949).

Almost surely, 2^222799897 is an apocalyptic number.

It is an amenable number.

222799897 is a deficient number, since it is larger than the sum of its proper divisors (1).

222799897 is an equidigital number, since it uses as much as digits as its factorization.

222799897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 55.

The square root of 222799897 is about 14926.4830753932. The cubic root of 222799897 is about 606.2312625094.

The spelling of 222799897 in words is "two hundred twenty-two million, seven hundred ninety-nine thousand, eight hundred ninety-seven".