844017849 has 6 divisors (see below), whose sum is σ = 1219136906. Its totient is φ = 562678560.

The previous prime is 844017817. The next prime is 844017859. The reversal of 844017849 is 948710448.

844017849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 815502249 + 28515600 = 28557^2 + 5340^2 .

It is not a de Polignac number, because 844017849 - 2⁵ = 844017817 is a prime.

It is a super-2 number, since 2×844017849² = 1424732258861173602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (844017809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46889872 + ... + 46889889.

Almost surely, 2^844017849 is an apocalyptic number.

It is an amenable number.

844017849 is a deficient number, since it is larger than the sum of its proper divisors (375119057).

844017849 is a wasteful number, since it uses less digits than its factorization.

844017849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93779767 (or 93779764 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 844017849 is about 29051.9852850025. The cubic root of 844017849 is about 945.0407675366.

The spelling of 844017849 in words is "eight hundred forty-four million, seventeen thousand, eight hundred forty-nine".