844013 has 2 divisors, whose sum is σ = 844014. Its totient is φ = 844012.

The previous prime is 844001. The next prime is 844043. The reversal of 844013 is 310448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 438244 + 405769 = 662^2 + 637^2 .

It is a cyclic number.

It is not a de Polignac number, because 844013 - 2⁸ = 843757 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (844043) 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 as a sum of consecutive naturals, namely, 422006 + 422007.

It is an arithmetic number, because the mean of its divisors is an integer number (422007).

2⁸⁴⁴⁰¹³ is an apocalyptic number.

It is an amenable number.

844013 is a deficient number, since it is larger than the sum of its proper divisors (1).

844013 is an equidigital number, since it uses as much as digits as its factorization.

844013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 844013 is about 918.7018014568. The cubic root of 844013 is about 94.5038957736.

The spelling of 844013 in words is "eight hundred forty-four thousand, thirteen".