222982849 has 2 divisors, whose sum is σ = 222982850. Its totient is φ = 222982848.

The previous prime is 222982847. The next prime is 222982853. The reversal of 222982849 is 948289222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222964624 + 18225 = 14932^2 + 135^2 .

It is a cyclic number.

It is not a de Polignac number, because 222982849 - 2¹ = 222982847 is a prime.

Together with 222982847, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 222982799 and 222982808.

It is not a weakly prime, because it can be changed into another prime (222982843) 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, 111491424 + 111491425.

It is an arithmetic number, because the mean of its divisors is an integer number (111491425).

Almost surely, 2^222982849 is an apocalyptic number.

It is an amenable number.

222982849 is a deficient number, since it is larger than the sum of its proper divisors (1).

222982849 is an equidigital number, since it uses as much as digits as its factorization.

222982849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 46.

The square root of 222982849 is about 14932.6102540715. The cubic root of 222982849 is about 606.3971525884.

It can be divided in two parts, 2229 and 82849, that added together give a triangular number (85078 = T₄₁₂).

The spelling of 222982849 in words is "two hundred twenty-two million, nine hundred eighty-two thousand, eight hundred forty-nine".