5985809 has 2 divisors, whose sum is σ = 5985810. Its totient is φ = 5985808.

The previous prime is 5985799. The next prime is 5985827. The reversal of 5985809 is 9085895.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4190209 + 1795600 = 2047^2 + 1340^2 .

It is a cyclic number.

It is not a de Polignac number, because 5985809 - 2¹⁶ = 5920273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5985809.

It is not a weakly prime, because it can be changed into another prime (5985829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2992904 + 2992905.

It is an arithmetic number, because the mean of its divisors is an integer number (2992905).

Almost surely, 2^5985809 is an apocalyptic number.

It is an amenable number.

5985809 is a deficient number, since it is larger than the sum of its proper divisors (1).

5985809 is an equidigital number, since it uses as much as digits as its factorization.

5985809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 44.

The square root of 5985809 is about 2446.5913021999. The cubic root of 5985809 is about 181.5686864216.

The spelling of 5985809 in words is "five million, nine hundred eighty-five thousand, eight hundred nine".