222266789 has 8 divisors (see below), whose sum is σ = 239782680. Its totient is φ = 205244416.

The previous prime is 222266753. The next prime is 222266791. The reversal of 222266789 is 987662222.

It can be written as a sum of positive squares in 4 ways, for example, as 31550689 + 190716100 = 5617^2 + 13810^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222266789 - 2⁸ = 222266533 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222266719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122444 + ... + 124245.

It is an arithmetic number, because the mean of its divisors is an integer number (29972835).

Almost surely, 2^222266789 is an apocalyptic number.

It is an amenable number.

222266789 is a deficient number, since it is larger than the sum of its proper divisors (17515891).

222266789 is a wasteful number, since it uses less digits than its factorization.

222266789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246759.

The product of its digits is 290304, while the sum is 44.

The square root of 222266789 is about 14908.6145902294. The cubic root of 222266789 is about 605.7473531756.

The spelling of 222266789 in words is "two hundred twenty-two million, two hundred sixty-six thousand, seven hundred eighty-nine".