229473217 has 2 divisors, whose sum is σ = 229473218. Its totient is φ = 229473216.

The previous prime is 229473173. The next prime is 229473247. The reversal of 229473217 is 712374922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227285776 + 2187441 = 15076^2 + 1479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229473217 is a prime.

It is not a weakly prime, because it can be changed into another prime (229473247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114736608 + 114736609.

It is an arithmetic number, because the mean of its divisors is an integer number (114736609).

Almost surely, 2^229473217 is an apocalyptic number.

It is an amenable number.

229473217 is a deficient number, since it is larger than the sum of its proper divisors (1).

229473217 is an equidigital number, since it uses as much as digits as its factorization.

229473217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 37.

The square root of 229473217 is about 15148.3734110300. The cubic root of 229473217 is about 612.2244475923.

The spelling of 229473217 in words is "two hundred twenty-nine million, four hundred seventy-three thousand, two hundred seventeen".