405859 has 8 divisors (see below), whose sum is σ = 438480. Its totient is φ = 374400.

The previous prime is 405857. The next prime is 405863. The reversal of 405859 is 958504.

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 405859 - 2¹ = 405857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 405859.

It is not an unprimeable number, because it can be changed into a prime (405857) 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, 519 + ... + 1039.

It is an arithmetic number, because the mean of its divisors is an integer number (54810).

2⁴⁰⁵⁸⁵⁹ is an apocalyptic number.

405859 is a deficient number, since it is larger than the sum of its proper divisors (32621).

405859 is a wasteful number, since it uses less digits than its factorization.

405859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 405859 is about 637.0706397253. The cubic root of 405859 is about 74.0386333455.

The spelling of 405859 in words is "four hundred five thousand, eight hundred fifty-nine".