871409 has 8 divisors (see below), whose sum is σ = 1086528. Its totient is φ = 678960.

The previous prime is 871393. The next prime is 871439. The reversal of 871409 is 904178.

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

It is a cyclic number.

It is not a de Polignac number, because 871409 - 2⁴ = 871393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (871439) 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, 5582 + ... + 5735.

It is an arithmetic number, because the mean of its divisors is an integer number (135816).

2⁸⁷¹⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

871409 is a deficient number, since it is larger than the sum of its proper divisors (215119).

871409 is a wasteful number, since it uses less digits than its factorization.

871409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11335.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 871409 is about 933.4929030260. The cubic root of 871409 is about 95.5155352412.

It can be divided in two parts, 8 and 71409, that added together give a palindrome (71417).

The spelling of 871409 in words is "eight hundred seventy-one thousand, four hundred nine".