871404 has 12 divisors (see below), whose sum is σ = 2033304. Its totient is φ = 290464.

The previous prime is 871393. The next prime is 871439. The reversal of 871404 is 404178.

It is a tau number, because it is divible by the number of its divisors (12).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 871404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36297 + ... + 36320.

It is an arithmetic number, because the mean of its divisors is an integer number (169442).

2⁸⁷¹⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

871404 is an abundant number, since it is smaller than the sum of its proper divisors (1161900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

871404 is a wasteful number, since it uses less digits than its factorization.

871404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72624 (or 72622 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 871404 is about 933.4902249086. The cubic root of 871404 is about 95.5153525568.

It can be divided in two parts, 871 and 404, that added together give a triangular number (1275 = T₅₀).

The spelling of 871404 in words is "eight hundred seventy-one thousand, four hundred four".