3285809 has 4 divisors (see below), whose sum is σ = 3332160. Its totient is φ = 3239460.

The previous prime is 3285749. The next prime is 3285823. The reversal of 3285809 is 9085823.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9085823 = 59 ⋅153997.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3285809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3285839) 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, 23069 + ... + 23210.

It is an arithmetic number, because the mean of its divisors is an integer number (833040).

Almost surely, 2^3285809 is an apocalyptic number.

It is an amenable number.

3285809 is a deficient number, since it is larger than the sum of its proper divisors (46351).

3285809 is an equidigital number, since it uses as much as digits as its factorization.

3285809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46350.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 3285809 is about 1812.6800600216. The cubic root of 3285809 is about 148.6668381515. Note that the first 3 decimals are identical.

The spelling of 3285809 in words is "three million, two hundred eighty-five thousand, eight hundred nine".