209004 has 12 divisors (see below), whose sum is σ = 487704. Its totient is φ = 69664.

The previous prime is 208997. The next prime is 209021. The reversal of 209004 is 400902.

209004 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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, 8697 + ... + 8720.

It is an arithmetic number, because the mean of its divisors is an integer number (40642).

2²⁰⁹⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

209004 is an abundant number, since it is smaller than the sum of its proper divisors (278700).

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

209004 is a wasteful number, since it uses less digits than its factorization.

209004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17424 (or 17422 counting only the distinct ones).

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

The square root of 209004 is about 457.1695527920. The cubic root of 209004 is about 59.3450999963.

Adding to 209004 its reverse (400902), we get a palindrome (609906).

The spelling of 209004 in words is "two hundred nine thousand, four".