409285 has 8 divisors (see below), whose sum is σ = 512640. Its totient is φ = 313104.

The previous prime is 409271. The next prime is 409289. The reversal of 409285 is 582904.

It is a happy number.

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 409285 - 2⁹ = 408773 is a prime.

It is a super-2 number, since 2×409285² = 335028422450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1665 + ... + 1894.

It is an arithmetic number, because the mean of its divisors is an integer number (64080).

2⁴⁰⁹²⁸⁵ is an apocalyptic number.

It is an amenable number.

409285 is a deficient number, since it is larger than the sum of its proper divisors (103355).

409285 is a wasteful number, since it uses less digits than its factorization.

409285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3587.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 409285 is about 639.7538589176. The cubic root of 409285 is about 74.2463786887.

The spelling of 409285 in words is "four hundred nine thousand, two hundred eighty-five".