409871 has 8 divisors (see below), whose sum is σ = 511104. Its totient is φ = 319320.

The previous prime is 409867. The next prime is 409879. The reversal of 409871 is 178904.

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 409871 - 2² = 409867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409879) 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, 2585 + ... + 2738.

It is an arithmetic number, because the mean of its divisors is an integer number (63888).

2⁴⁰⁹⁸⁷¹ is an apocalyptic number.

409871 is a deficient number, since it is larger than the sum of its proper divisors (101233).

409871 is a wasteful number, since it uses less digits than its factorization.

409871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5341.

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

The square root of 409871 is about 640.2116837422. The cubic root of 409871 is about 74.2817962501.

The spelling of 409871 in words is "four hundred nine thousand, eight hundred seventy-one".