2043709 has 4 divisors (see below), whose sum is σ = 2068416. Its totient is φ = 2019004.

The previous prime is 2043703. The next prime is 2043719. The reversal of 2043709 is 9073402.

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.

It is a cyclic number.

It is not a de Polignac number, because 2043709 - 2¹¹ = 2041661 is a prime.

It is a super-3 number, since 3×2043709³ = 25608163095333749487, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043703) 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, 12229 + ... + 12394.

It is an arithmetic number, because the mean of its divisors is an integer number (517104).

2^2043709 is an apocalyptic number.

It is an amenable number.

2043709 is a deficient number, since it is larger than the sum of its proper divisors (24707).

2043709 is an equidigital number, since it uses as much as digits as its factorization.

2043709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24706.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 2043709 is about 1429.5835057806. The cubic root of 2043709 is about 126.9033302425.

The spelling of 2043709 in words is "two million, forty-three thousand, seven hundred nine".