434340217 has 2 divisors, whose sum is σ = 434340218. Its totient is φ = 434340216.

The previous prime is 434340187. The next prime is 434340229. The reversal of 434340217 is 712043434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227527056 + 206813161 = 15084^2 + 14381^2 .

It is a cyclic number.

It is not a de Polignac number, because 434340217 - 2¹⁹ = 433815929 is a prime.

It is equal to p_23066128 and since 434340217 and 23066128 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (434340017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217170108 + 217170109.

It is an arithmetic number, because the mean of its divisors is an integer number (217170109).

Almost surely, 2^434340217 is an apocalyptic number.

It is an amenable number.

434340217 is a deficient number, since it is larger than the sum of its proper divisors (1).

434340217 is an equidigital number, since it uses as much as digits as its factorization.

434340217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 434340217 is about 20840.8305256772. The cubic root of 434340217 is about 757.3152134885.

The spelling of 434340217 in words is "four hundred thirty-four million, three hundred forty thousand, two hundred seventeen".