3456809 has 6 divisors (see below), whose sum is σ = 3518190. Its totient is φ = 3396480.

The previous prime is 3456793. The next prime is 3456821. The reversal of 3456809 is 9086543.

It can be written as a sum of positive squares in 3 ways, for example, as 896809 + 2560000 = 947^2 + 1600^2 .

It is not a de Polignac number, because 3456809 - 2⁴ = 3456793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3456889) 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 5 ways as a sum of consecutive naturals, for example, 3257 + ... + 4185.

It is an arithmetic number, because the mean of its divisors is an integer number (586365).

Almost surely, 2^3456809 is an apocalyptic number.

It is an amenable number.

3456809 is a deficient number, since it is larger than the sum of its proper divisors (61381).

3456809 is an frugal number, since it uses more digits than its factorization.

3456809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051 (or 990 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 3456809 is about 1859.2495798036. The cubic root of 3456809 is about 151.2023222444.

The spelling of 3456809 in words is "three million, four hundred fifty-six thousand, eight hundred nine".