871720293 has 8 divisors (see below), whose sum is σ = 1165223008. Its totient is φ = 579682224.

The previous prime is 871720273. The next prime is 871720301. The reversal of 871720293 is 392027178.

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

It is not a de Polignac number, because 871720293 - 2⁵ = 871720261 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 (871720273) 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, 364771 + ... + 367152.

It is an arithmetic number, because the mean of its divisors is an integer number (145652876).

Almost surely, 2^871720293 is an apocalyptic number.

It is an amenable number.

871720293 is a deficient number, since it is larger than the sum of its proper divisors (293502715).

871720293 is a wasteful number, since it uses less digits than its factorization.

871720293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732323.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 871720293 is about 29524.9097035029. The cubic root of 871720293 is about 955.2690754274.

The spelling of 871720293 in words is "eight hundred seventy-one million, seven hundred twenty thousand, two hundred ninety-three".