849717 has 16 divisors (see below), whose sum is σ = 1373760. Its totient is φ = 514800.

The previous prime is 849703. The next prime is 849721. The reversal of 849717 is 717948.

It is not a de Polignac number, because 849717 - 2⁴ = 849701 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849727) 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 in 15 ways as a sum of consecutive naturals, for example, 1134 + ... + 1727.

It is an arithmetic number, because the mean of its divisors is an integer number (85860).

2⁸⁴⁹⁷¹⁷ is an apocalyptic number.

It is an amenable number.

849717 is a deficient number, since it is larger than the sum of its proper divisors (524043).

849717 is a wasteful number, since it uses less digits than its factorization.

849717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881 (or 2875 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 849717 is about 921.8009546534. The cubic root of 849717 is about 94.7163097316.

Subtracting from 849717 its reverse (717948), we obtain a square (131769 = 363²).

It can be divided in two parts, 84 and 9717, that added together give a square (9801 = 99²).

The spelling of 849717 in words is "eight hundred forty-nine thousand, seven hundred seventeen".