405830 has 8 divisors (see below), whose sum is σ = 730512. Its totient is φ = 162328.

The previous prime is 405829. The next prime is 405857. The reversal of 405830 is 38504.

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

It is a congruent number.

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, 20282 + ... + 20301.

It is an arithmetic number, because the mean of its divisors is an integer number (91314).

2⁴⁰⁵⁸³⁰ is an apocalyptic number.

405830 is a deficient number, since it is larger than the sum of its proper divisors (324682).

405830 is a wasteful number, since it uses less digits than its factorization.

405830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40590.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 405830 is about 637.0478788914. The cubic root of 405830 is about 74.0368698664.

The spelling of 405830 in words is "four hundred five thousand, eight hundred thirty".