1000873 has 4 divisors (see below), whose sum is σ = 1005268. Its totient is φ = 996480.

The previous prime is 1000861. The next prime is 1000889. The reversal of 1000873 is 3780001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 300304 + 700569 = 548^2 + 837^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000873 is a prime.

It is a Duffinian number.

It is a plaindrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 1000873.

It is not an unprimeable number, because it can be changed into a prime (1000273) 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 3 ways as a sum of consecutive naturals, for example, 1836 + ... + 2317.

It is an arithmetic number, because the mean of its divisors is an integer number (251317).

2^1000873 is an apocalyptic number.

It is an amenable number.

1000873 is a deficient number, since it is larger than the sum of its proper divisors (4395).

1000873 is an equidigital number, since it uses as much as digits as its factorization.

1000873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4394.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 1000873 is about 1000.4364047754. The cubic root of 1000873 is about 100.0290915360.

Adding to 1000873 its reverse (3780001), we get a palindrome (4780874).

The spelling of 1000873 in words is "one million, eight hundred seventy-three", and thus it is an aban number.