849704717 has 2 divisors, whose sum is σ = 849704718. Its totient is φ = 849704716.

The previous prime is 849704707. The next prime is 849704747. The reversal of 849704717 is 717407948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 585349636 + 264355081 = 24194^2 + 16259^2 .

It is a cyclic number.

It is not a de Polignac number, because 849704717 - 2⁸ = 849704461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (849704707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424852358 + 424852359.

It is an arithmetic number, because the mean of its divisors is an integer number (424852359).

Almost surely, 2^849704717 is an apocalyptic number.

It is an amenable number.

849704717 is a deficient number, since it is larger than the sum of its proper divisors (1).

849704717 is an equidigital number, since it uses as much as digits as its factorization.

849704717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 395136, while the sum is 47.

The square root of 849704717 is about 29149.6949726751. The cubic root of 849704717 is about 947.1585334200.

The spelling of 849704717 in words is "eight hundred forty-nine million, seven hundred four thousand, seven hundred seventeen".