844002 has 12 divisors (see below), whose sum is σ = 1828710. Its totient is φ = 281328.

The previous prime is 844001. The next prime is 844013. The reversal of 844002 is 200448.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 720801 + 123201 = 849^2 + 351^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 46889 = 844002 / (8 + 4 + 4 + 0 + 0 + 2).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 844002.

It is not an unprimeable number, because it can be changed into a prime (844001) 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, 23427 + ... + 23462.

2⁸⁴⁴⁰⁰² is an apocalyptic number.

844002 is an abundant number, since it is smaller than the sum of its proper divisors (984708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

844002 is a wasteful number, since it uses less digits than its factorization.

844002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46897 (or 46894 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 844002 is about 918.6958147287. The cubic root of 844002 is about 94.5034852162.

The spelling of 844002 in words is "eight hundred forty-four thousand, two".