222445689 has 16 divisors (see below), whose sum is σ = 313355520. Its totient is φ = 140134400.

The previous prime is 222445679. The next prime is 222445703. The reversal of 222445689 is 986544222.

It is a cyclic number.

It is not a de Polignac number, because 222445689 - 2¹⁶ = 222380153 is a prime.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 222445689.

It is not an unprimeable number, because it can be changed into a prime (222445609) 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 in 15 ways as a sum of consecutive naturals, for example, 23112 + ... + 31289.

It is an arithmetic number, because the mean of its divisors is an integer number (19584720).

Almost surely, 2^222445689 is an apocalyptic number.

222445689 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

222445689 is a deficient number, since it is larger than the sum of its proper divisors (90909831).

222445689 is a wasteful number, since it uses less digits than its factorization.

222445689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54480.

The product of its digits is 276480, while the sum is 42.

The square root of 222445689 is about 14914.6132702125. The cubic root of 222445689 is about 605.9098293005.

The spelling of 222445689 in words is "two hundred twenty-two million, four hundred forty-five thousand, six hundred eighty-nine".