200409 has 8 divisors (see below), whose sum is σ = 291552. Its totient is φ = 121440.

The previous prime is 200407. The next prime is 200437. The reversal of 200409 is 904002.

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

It is not a de Polignac number, because 200409 - 2¹ = 200407 is a prime.

200409 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 200409.

It is not an unprimeable number, because it can be changed into a prime (200401) 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, 3004 + ... + 3069.

It is an arithmetic number, because the mean of its divisors is an integer number (36444).

2²⁰⁰⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

200409 is a deficient number, since it is larger than the sum of its proper divisors (91143).

200409 is a wasteful number, since it uses less digits than its factorization.

200409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6087.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 200409 is about 447.6706378578. The cubic root of 200409 is about 58.5201917296.

The spelling of 200409 in words is "two hundred thousand, four hundred nine".