222866289 has 8 divisors (see below), whose sum is σ = 330172320. Its totient is φ = 148577508.

The previous prime is 222866227. The next prime is 222866309. The reversal of 222866289 is 982668222.

222866289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 222866289 - 2²¹ = 220769137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222864289) 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, 4127127 + ... + 4127180.

It is an arithmetic number, because the mean of its divisors is an integer number (41271540).

Almost surely, 2^222866289 is an apocalyptic number.

It is an amenable number.

222866289 is a deficient number, since it is larger than the sum of its proper divisors (107306031).

222866289 is an equidigital number, since it uses as much as digits as its factorization.

222866289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8254316 (or 8254310 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 222866289 is about 14928.7068763507. The cubic root of 222866289 is about 606.2914733522.

The spelling of 222866289 in words is "two hundred twenty-two million, eight hundred sixty-six thousand, two hundred eighty-nine".