849136817 has 2 divisors, whose sum is σ = 849136818. Its totient is φ = 849136816.

The previous prime is 849136789. The next prime is 849136837. The reversal of 849136817 is 718631948.

849136817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 808890481 + 40246336 = 28441^2 + 6344^2 .

It is a cyclic number.

It is not a de Polignac number, because 849136817 - 2⁶ = 849136753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (849136837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424568408 + 424568409.

It is an arithmetic number, because the mean of its divisors is an integer number (424568409).

Almost surely, 2^849136817 is an apocalyptic number.

It is an amenable number.

849136817 is a deficient number, since it is larger than the sum of its proper divisors (1).

849136817 is an equidigital number, since it uses as much as digits as its factorization.

849136817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 47.

The square root of 849136817 is about 29139.9522477303. The cubic root of 849136817 is about 946.9474753124.

The spelling of 849136817 in words is "eight hundred forty-nine million, one hundred thirty-six thousand, eight hundred seventeen".