1000844 has 24 divisors (see below), whose sum is σ = 1987440. Its totient is φ = 437184.

The previous prime is 1000829. The next prime is 1000847. The reversal of 1000844 is 4480001.

It is a happy number.

1000844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482 + ... + 1494.

It is an arithmetic number, because the mean of its divisors is an integer number (82810).

2^1000844 is an apocalyptic number.

It is an amenable number.

1000844 is a deficient number, since it is larger than the sum of its proper divisors (986596).

1000844 is a wasteful number, since it uses less digits than its factorization.

1000844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049 (or 1047 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1000844 is about 1000.4219109956. The cubic root of 1000844 is about 100.0281254222.

Adding to 1000844 its reverse (4480001), we get a palindrome (5480845).

The spelling of 1000844 in words is "one million, eight hundred forty-four", and thus it is an aban number.