8010209 has 4 divisors (see below), whose sum is σ = 8089620. Its totient is φ = 7930800.

The previous prime is 8010203. The next prime is 8010221. The reversal of 8010209 is 9020108.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7480225 + 529984 = 2735^2 + 728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8010209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8010203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39554 + ... + 39755.

It is an arithmetic number, because the mean of its divisors is an integer number (2022405).

Almost surely, 2^8010209 is an apocalyptic number.

It is an amenable number.

8010209 is a deficient number, since it is larger than the sum of its proper divisors (79411).

8010209 is a wasteful number, since it uses less digits than its factorization.

8010209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79410.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 8010209 is about 2830.2312626356. The cubic root of 8010209 is about 200.0850388369.

The spelling of 8010209 in words is "eight million, ten thousand, two hundred nine".