2000023209 has 6 divisors (see below), whose sum is σ = 2888922426. Its totient is φ = 1333348800.

The previous prime is 2000023199. The next prime is 2000023247. The reversal of 2000023209 is 9023200002.

It can be written as a sum of positive squares in only one way, i.e., 1730144025 + 269879184 = 41595^2 + 16428^2 .

It is not a de Polignac number, because 2000023209 - 2⁵ = 2000023177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2000023191 and 2000023200.

It is not an unprimeable number, because it can be changed into a prime (2000003209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111112392 + ... + 111112409.

It is an arithmetic number, because the mean of its divisors is an integer number (481487071).

Almost surely, 2^2000023209 is an apocalyptic number.

It is an amenable number.

2000023209 is a deficient number, since it is larger than the sum of its proper divisors (888899217).

2000023209 is a wasteful number, since it uses less digits than its factorization.

2000023209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222224807 (or 222224804 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2000023209 is about 44721.6190337515. The cubic root of 2000023209 is about 1259.9259234606.

The spelling of 2000023209 in words is "two billion, twenty-three thousand, two hundred nine".