409900 has 18 divisors (see below), whose sum is σ = 889700. Its totient is φ = 163920.

The previous prime is 409897. The next prime is 409901. The reversal of 409900 is 9904.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 409900.

It is not an unprimeable number, because it can be changed into a prime (409901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1950 + ... + 2149.

2⁴⁰⁹⁹⁰⁰ is an apocalyptic number.

It is an amenable number.

409900 is an abundant number, since it is smaller than the sum of its proper divisors (479800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

409900 is a wasteful number, since it uses less digits than its factorization.

409900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4113 (or 4106 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 409900 is about 640.2343321004. The cubic root of 409900 is about 74.2835481194.

The spelling of 409900 in words is "four hundred nine thousand, nine hundred".