405884 has 12 divisors (see below), whose sum is σ = 735000. Its totient is φ = 195888.

The previous prime is 405871. The next prime is 405893. The reversal of 405884 is 488504.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 405884.

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, 1634 + ... + 1865.

It is an arithmetic number, because the mean of its divisors is an integer number (61250).

2⁴⁰⁵⁸⁸⁴ is an apocalyptic number.

It is an amenable number.

405884 is a deficient number, since it is larger than the sum of its proper divisors (329116).

405884 is a wasteful number, since it uses less digits than its factorization.

405884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3532 (or 3530 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 405884 is about 637.0902604812. The cubic root of 405884 is about 74.0401535186.

The spelling of 405884 in words is "four hundred five thousand, eight hundred eighty-four".