222456889 has 4 divisors (see below), whose sum is σ = 222508660. Its totient is φ = 222405120.

The previous prime is 222456881. The next prime is 222456907. The reversal of 222456889 is 988654222.

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 15327225 + 207129664 = 3915^2 + 14392^2 .

It is a cyclic number.

It is not a de Polignac number, because 222456889 - 2³ = 222456881 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (222456881) 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, 18792 + ... + 28249.

It is an arithmetic number, because the mean of its divisors is an integer number (55627165).

Almost surely, 2^222456889 is an apocalyptic number.

It is an amenable number.

222456889 is a deficient number, since it is larger than the sum of its proper divisors (51771).

222456889 is an equidigital number, since it uses as much as digits as its factorization.

222456889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51770.

The product of its digits is 552960, while the sum is 46.

The square root of 222456889 is about 14914.9887361674. The cubic root of 222456889 is about 605.9199981890.

The spelling of 222456889 in words is "two hundred twenty-two million, four hundred fifty-six thousand, eight hundred eighty-nine".