10000000209 has 4 divisors (see below), whose sum is σ = 13333333616. Its totient is φ = 6666666804.

The previous prime is 10000000207. The next prime is 10000000259. The reversal of 10000000209 is 90200000001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 10000000209 - 2¹ = 10000000207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10000000194 and 10000000203.

It is not an unprimeable number, because it can be changed into a prime (10000000207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1666666699 + ... + 1666666704.

It is an arithmetic number, because the mean of its divisors is an integer number (3333333404).

Almost surely, 2^10000000209 is an apocalyptic number.

It is an amenable number.

10000000209 is a deficient number, since it is larger than the sum of its proper divisors (3333333407).

10000000209 is an equidigital number, since it uses as much as digits as its factorization.

10000000209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333333406.

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

The spelling of 10000000209 in words is "ten billion, two hundred nine", and thus it is an aban number.