228204089 has 2 divisors, whose sum is σ = 228204090. Its totient is φ = 228204088.

The previous prime is 228204083. The next prime is 228204121. The reversal of 228204089 is 980402822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132066064 + 96138025 = 11492^2 + 9805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228204089 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (228204083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114102044 + 114102045.

It is an arithmetic number, because the mean of its divisors is an integer number (114102045).

Almost surely, 2^228204089 is an apocalyptic number.

It is an amenable number.

228204089 is a deficient number, since it is larger than the sum of its proper divisors (1).

228204089 is an equidigital number, since it uses as much as digits as its factorization.

228204089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 228204089 is about 15106.4254209922. The cubic root of 228204089 is about 611.0937012255.

The spelling of 228204089 in words is "two hundred twenty-eight million, two hundred four thousand, eighty-nine".