873853 has 4 divisors (see below), whose sum is σ = 881980. Its totient is φ = 865728.

The previous prime is 873787. The next prime is 873863. The reversal of 873853 is 358378.

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 558009 + 315844 = 747^2 + 562^2 .

It is a cyclic number.

It is not a de Polignac number, because 873853 - 2¹³ = 865661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (873863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3900 + ... + 4117.

It is an arithmetic number, because the mean of its divisors is an integer number (220495).

2⁸⁷³⁸⁵³ is an apocalyptic number.

It is an amenable number.

873853 is a deficient number, since it is larger than the sum of its proper divisors (8127).

873853 is a wasteful number, since it uses less digits than its factorization.

873853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8126.

The product of its digits is 20160, while the sum is 34.

The square root of 873853 is about 934.8010483520. The cubic root of 873853 is about 95.6047478720.

The spelling of 873853 in words is "eight hundred seventy-three thousand, eight hundred fifty-three".