844149 has 8 divisors (see below), whose sum is σ = 1153152. Its totient is φ = 548960.

The previous prime is 844141. The next prime is 844153. The reversal of 844149 is 941448.

844149 = 123² + 124² + ... + 163².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 844149 - 2³ = 844141 is a prime.

It is a Curzon number.

844149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844141) 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 7 ways as a sum of consecutive naturals, for example, 3309 + ... + 3554.

It is an arithmetic number, because the mean of its divisors is an integer number (144144).

2⁸⁴⁴¹⁴⁹ is an apocalyptic number.

It is an amenable number.

844149 is a deficient number, since it is larger than the sum of its proper divisors (309003).

844149 is a wasteful number, since it uses less digits than its factorization.

844149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6907.

The product of its digits is 4608, while the sum is 30.

The square root of 844149 is about 918.7758159638. The cubic root of 844149 is about 94.5089714615.

The spelling of 844149 in words is "eight hundred forty-four thousand, one hundred forty-nine".