222540793 has 2 divisors, whose sum is σ = 222540794. Its totient is φ = 222540792.

The previous prime is 222540739. The next prime is 222540797. The reversal of 222540793 is 397045222.

It is a happy number.

Together with previous prime (222540739) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221771664 + 769129 = 14892^2 + 877^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222540793 is a prime.

It is equal to p_12254758 and since 222540793 and 12254758 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (222540797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111270396 + 111270397.

It is an arithmetic number, because the mean of its divisors is an integer number (111270397).

Almost surely, 2^222540793 is an apocalyptic number.

It is an amenable number.

222540793 is a deficient number, since it is larger than the sum of its proper divisors (1).

222540793 is an equidigital number, since it uses as much as digits as its factorization.

222540793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 222540793 is about 14917.8012119749. The cubic root of 222540793 is about 605.9961668367.

The spelling of 222540793 in words is "two hundred twenty-two million, five hundred forty thousand, seven hundred ninety-three".