871799 has 4 divisors (see below), whose sum is σ = 877800. Its totient is φ = 865800.

The previous prime is 871789. The next prime is 871817. The reversal of 871799 is 997178.

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

It is a cyclic number.

It is not a de Polignac number, because 871799 - 2¹⁶ = 806263 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871789) 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, 2777 + ... + 3074.

It is an arithmetic number, because the mean of its divisors is an integer number (219450).

2⁸⁷¹⁷⁹⁹ is an apocalyptic number.

871799 is a deficient number, since it is larger than the sum of its proper divisors (6001).

871799 is a wasteful number, since it uses less digits than its factorization.

871799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6000.

The product of its digits is 31752, while the sum is 41.

The square root of 871799 is about 933.7017725163. The cubic root of 871799 is about 95.5297824749.

The spelling of 871799 in words is "eight hundred seventy-one thousand, seven hundred ninety-nine".