426934217 has 2 divisors, whose sum is σ = 426934218. Its totient is φ = 426934216.

The previous prime is 426934187. The next prime is 426934219. The reversal of 426934217 is 712439624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 284394496 + 142539721 = 16864^2 + 11939^2 .

It is a cyclic number.

It is not a de Polignac number, because 426934217 - 2⁸ = 426933961 is a prime.

Together with 426934219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (426934219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213467108 + 213467109.

It is an arithmetic number, because the mean of its divisors is an integer number (213467109).

Almost surely, 2^426934217 is an apocalyptic number.

It is an amenable number.

426934217 is a deficient number, since it is larger than the sum of its proper divisors (1).

426934217 is an equidigital number, since it uses as much as digits as its factorization.

426934217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 38.

The square root of 426934217 is about 20662.3865272141. The cubic root of 426934217 is about 752.9861492890.

The spelling of 426934217 in words is "four hundred twenty-six million, nine hundred thirty-four thousand, two hundred seventeen".