844237849 has 48 divisors (see below), whose sum is σ = 1133368320. Its totient is φ = 611660160.

The previous prime is 844237813. The next prime is 844237861. The reversal of 844237849 is 948732448.

It is a happy number.

It is not a de Polignac number, because 844237849 - 2¹¹ = 844235801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (844237049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1017967 + ... + 1018795.

It is an arithmetic number, because the mean of its divisors is an integer number (23611840).

Almost surely, 2^844237849 is an apocalyptic number.

It is an amenable number.

844237849 is a deficient number, since it is larger than the sum of its proper divisors (289130471).

844237849 is a wasteful number, since it uses less digits than its factorization.

844237849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918 (or 899 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 49.

The square root of 844237849 is about 29055.7713544143. The cubic root of 844237849 is about 945.1228712138.

The spelling of 844237849 in words is "eight hundred forty-four million, two hundred thirty-seven thousand, eight hundred forty-nine".