229977217 has 2 divisors, whose sum is σ = 229977218. Its totient is φ = 229977216.

The previous prime is 229977199. The next prime is 229977227. The reversal of 229977217 is 712779922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208484721 + 21492496 = 14439^2 + 4636^2 .

It is a cyclic number.

It is not a de Polignac number, because 229977217 - 2¹¹ = 229975169 is a prime.

It is not a weakly prime, because it can be changed into another prime (229977227) 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 as a sum of consecutive naturals, namely, 114988608 + 114988609.

It is an arithmetic number, because the mean of its divisors is an integer number (114988609).

Almost surely, 2^229977217 is an apocalyptic number.

It is an amenable number.

229977217 is a deficient number, since it is larger than the sum of its proper divisors (1).

229977217 is an equidigital number, since it uses as much as digits as its factorization.

229977217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 222264, while the sum is 46.

The square root of 229977217 is about 15164.9997362347. Note that the first 3 decimals coincide. The cubic root of 229977217 is about 612.6723364566.

The spelling of 229977217 in words is "two hundred twenty-nine million, nine hundred seventy-seven thousand, two hundred seventeen".