229227209 has 2 divisors, whose sum is σ = 229227210. Its totient is φ = 229227208.

The previous prime is 229227151. The next prime is 229227217. The reversal of 229227209 is 902722922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224400400 + 4826809 = 14980^2 + 2197^2 .

It is a cyclic number.

It is not a de Polignac number, because 229227209 - 2²⁰ = 228178633 is a prime.

It is a super-2 number, since 2×229227209² = 105090226691859362, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (229227259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114613604 + 114613605.

It is an arithmetic number, because the mean of its divisors is an integer number (114613605).

Almost surely, 2^229227209 is an apocalyptic number.

It is an amenable number.

229227209 is a deficient number, since it is larger than the sum of its proper divisors (1).

229227209 is an equidigital number, since it uses as much as digits as its factorization.

229227209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 229227209 is about 15140.2512858935. The cubic root of 229227209 is about 612.0055898574.

The spelling of 229227209 in words is "two hundred twenty-nine million, two hundred twenty-seven thousand, two hundred nine".