3243709 has 4 divisors (see below), whose sum is σ = 3707104. Its totient is φ = 2780316.

The previous prime is 3243697. The next prime is 3243727. The reversal of 3243709 is 9073423.

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: 9073423 = 41 ⋅221303.

It is not a de Polignac number, because 3243709 - 2⁵ = 3243677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3243739) 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, 231687 + ... + 231700.

It is an arithmetic number, because the mean of its divisors is an integer number (926776).

Almost surely, 2^3243709 is an apocalyptic number.

It is an amenable number.

3243709 is a deficient number, since it is larger than the sum of its proper divisors (463395).

3243709 is an equidigital number, since it uses as much as digits as its factorization.

3243709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463394.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 3243709 is about 1801.0299830930. The cubic root of 3243709 is about 148.0291670054.

The spelling of 3243709 in words is "three million, two hundred forty-three thousand, seven hundred nine".