5208809 has 2 divisors, whose sum is σ = 5208810. Its totient is φ = 5208808.

The previous prime is 5208799. The next prime is 5208821. The reversal of 5208809 is 9088025.

5208809 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3097600 + 2111209 = 1760^2 + 1453^2 .

It is a cyclic number.

It is not a de Polignac number, because 5208809 - 2¹² = 5204713 is a prime.

It is a Chen prime.

It is equal to p₃₆₁₉₉₄ and since 5208809 and 361994 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (5208829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2604404 + 2604405.

It is an arithmetic number, because the mean of its divisors is an integer number (2604405).

Almost surely, 2^5208809 is an apocalyptic number.

It is an amenable number.

5208809 is a deficient number, since it is larger than the sum of its proper divisors (1).

5208809 is an equidigital number, since it uses as much as digits as its factorization.

5208809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 5208809 is about 2282.2815339042. The cubic root of 5208809 is about 173.3455953686.

The spelling of 5208809 in words is "five million, two hundred eight thousand, eight hundred nine".