849239076289 has 4 divisors (see below), whose sum is σ = 849240991620. Its totient is φ = 849237160960.

The previous prime is 849239076263. The next prime is 849239076313. The reversal of 849239076289 is 982670932948.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 761849665600 + 87389410689 = 872840^2 + 295617^2 .

It is a cyclic number.

It is not a de Polignac number, because 849239076289 - 2⁹ = 849239075777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (849239079289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88017 + ... + 1306225.

It is an arithmetic number, because the mean of its divisors is an integer number (212310247905).

Almost surely, 2^849239076289 is an apocalyptic number.

It is an amenable number.

849239076289 is a deficient number, since it is larger than the sum of its proper divisors (1915331).

849239076289 is a wasteful number, since it uses less digits than its factorization.

849239076289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915330.

The product of its (nonzero) digits is 94058496, while the sum is 67.

The spelling of 849239076289 in words is "eight hundred forty-nine billion, two hundred thirty-nine million, seventy-six thousand, two hundred eighty-nine".