871724789 has 8 divisors (see below), whose sum is σ = 950664960. Its totient is φ = 794482416.

The previous prime is 871724783. The next prime is 871724849. The reversal of 871724789 is 987427178.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 871724789 - 2⁸ = 871724533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 871724789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871724783) 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, 423377 + ... + 425430.

It is an arithmetic number, because the mean of its divisors is an integer number (118833120).

Almost surely, 2^871724789 is an apocalyptic number.

It is an amenable number.

871724789 is a deficient number, since it is larger than the sum of its proper divisors (78940171).

871724789 is a wasteful number, since it uses less digits than its factorization.

871724789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848899.

The product of its digits is 1580544, while the sum is 53.

The square root of 871724789 is about 29524.9858425030. The cubic root of 871724789 is about 955.2707177288.

The spelling of 871724789 in words is "eight hundred seventy-one million, seven hundred twenty-four thousand, seven hundred eighty-nine".