222440689 has 4 divisors (see below), whose sum is σ = 222681060. Its totient is φ = 222200320.

The previous prime is 222440681. The next prime is 222440693. The reversal of 222440689 is 986044222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81306289 + 141134400 = 9017^2 + 11880^2 .

It is a cyclic number.

It is not a de Polignac number, because 222440689 - 2³ = 222440681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222440681) 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 in 3 ways as a sum of consecutive naturals, for example, 118792 + ... + 120649.

It is an arithmetic number, because the mean of its divisors is an integer number (55670265).

Almost surely, 2^222440689 is an apocalyptic number.

It is an amenable number.

222440689 is a deficient number, since it is larger than the sum of its proper divisors (240371).

222440689 is an equidigital number, since it uses as much as digits as its factorization.

222440689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240370.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 222440689 is about 14914.4456484309. The cubic root of 222440689 is about 605.9052895080.

The spelling of 222440689 in words is "two hundred twenty-two million, four hundred forty thousand, six hundred eighty-nine".