8057209 has 4 divisors (see below), whose sum is σ = 8110720. Its totient is φ = 8003700.

The previous prime is 8057191. The next prime is 8057221. The reversal of 8057209 is 9027508.

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 a cyclic number.

It is not a de Polignac number, because 8057209 - 2⁵ = 8057177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8057809) 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, 26529 + ... + 26830.

It is an arithmetic number, because the mean of its divisors is an integer number (2027680).

Almost surely, 2^8057209 is an apocalyptic number.

It is an amenable number.

8057209 is a deficient number, since it is larger than the sum of its proper divisors (53511).

8057209 is a wasteful number, since it uses less digits than its factorization.

8057209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53510.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 8057209 is about 2838.5223268454. The cubic root of 8057209 is about 200.4756097470.

Subtracting 8057209 from its reverse (9027508), we obtain a cube (970299 = 99³).

The spelling of 8057209 in words is "eight million, fifty-seven thousand, two hundred nine".