849169273 has 2 divisors, whose sum is σ = 849169274. Its totient is φ = 849169272.

The previous prime is 849169253. The next prime is 849169291. The reversal of 849169273 is 372961948.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 820994409 + 28174864 = 28653^2 + 5308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-849169273 is a prime.

It is not a weakly prime, because it can be changed into another prime (849169253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424584636 + 424584637.

It is an arithmetic number, because the mean of its divisors is an integer number (424584637).

Almost surely, 2^849169273 is an apocalyptic number.

It is an amenable number.

849169273 is a deficient number, since it is larger than the sum of its proper divisors (1).

849169273 is an equidigital number, since it uses as much as digits as its factorization.

849169273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 49.

The square root of 849169273 is about 29140.5091410565. The cubic root of 849169273 is about 946.9595400096.

The spelling of 849169273 in words is "eight hundred forty-nine million, one hundred sixty-nine thousand, two hundred seventy-three".