228822289 has 4 divisors (see below), whose sum is σ = 228875760. Its totient is φ = 228768820.

The previous prime is 228822281. The next prime is 228822311. The reversal of 228822289 is 982228822.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228822289 - 2³ = 228822281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228822281) 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, 19699 + ... + 29080.

It is an arithmetic number, because the mean of its divisors is an integer number (57218940).

Almost surely, 2^228822289 is an apocalyptic number.

It is an amenable number.

228822289 is a deficient number, since it is larger than the sum of its proper divisors (53471).

228822289 is an equidigital number, since it uses as much as digits as its factorization.

228822289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53470.

The product of its digits is 147456, while the sum is 43.

The square root of 228822289 is about 15126.8730741023. The cubic root of 228822289 is about 611.6450169494.

The spelling of 228822289 in words is "two hundred twenty-eight million, eight hundred twenty-two thousand, two hundred eighty-nine".