844749 has 10 divisors (see below), whose sum is σ = 1262030. Its totient is φ = 563112.

The previous prime is 844733. The next prime is 844757. The reversal of 844749 is 947448.

It can be written as a sum of positive squares in only one way, i.e., 842724 + 2025 = 918^2 + 45^2 .

It is not a de Polignac number, because 844749 - 2⁴ = 844733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844709) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5134 + ... + 5295.

It is an arithmetic number, because the mean of its divisors is an integer number (126203).

2⁸⁴⁴⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

844749 is a deficient number, since it is larger than the sum of its proper divisors (417281).

844749 is a wasteful number, since it uses less digits than its factorization.

844749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10441 (or 10432 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 844749 is about 919.1022794009. The cubic root of 844749 is about 94.5313576963.

The spelling of 844749 in words is "eight hundred forty-four thousand, seven hundred forty-nine".