1000209 has 8 divisors (see below), whose sum is σ = 1524160. Its totient is φ = 571536.

The previous prime is 1000199. The next prime is 1000211. The reversal of 1000209 is 9020001.

It is a happy number.

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

It is not a de Polignac number, because 1000209 - 2⁴ = 1000193 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1000194 and 1000203.

It is not an unprimeable number, because it can be changed into a prime (1000249) 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, 23794 + ... + 23835.

It is an arithmetic number, because the mean of its divisors is an integer number (190520).

2^1000209 is an apocalyptic number.

It is an amenable number.

1000209 is a deficient number, since it is larger than the sum of its proper divisors (523951).

1000209 is an equidigital number, since it uses as much as digits as its factorization.

1000209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47639.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1000209 is about 1000.1044945404. The cubic root of 1000209 is about 100.0069661814.

The spelling of 1000209 in words is "one million, two hundred nine", and thus it is an aban number.