2709439 has 4 divisors (see below), whose sum is σ = 2714200. Its totient is φ = 2704680.

The previous prime is 2709397. The next prime is 2709467. The reversal of 2709439 is 9349072.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2709439 - 2¹¹ = 2707391 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 (2709479) 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, 1389 + ... + 2710.

It is an arithmetic number, because the mean of its divisors is an integer number (678550).

2^2709439 is an apocalyptic number.

2709439 is a deficient number, since it is larger than the sum of its proper divisors (4761).

2709439 is an equidigital number, since it uses as much as digits as its factorization.

2709439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4760.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 2709439 is about 1646.0373628809. The cubic root of 2709439 is about 139.4097427916.

The spelling of 2709439 in words is "two million, seven hundred nine thousand, four hundred thirty-nine".