2709440039 has 4 divisors (see below), whose sum is σ = 2736266280. Its totient is φ = 2682613800.

The previous prime is 2709440003. The next prime is 2709440051. The reversal of 2709440039 is 9300449072.

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 2709440039 - 2⁸ = 2709439783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2709439984 and 2709440011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2709440339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13412969 + ... + 13413170.

It is an arithmetic number, because the mean of its divisors is an integer number (684066570).

Almost surely, 2^2709440039 is an apocalyptic number.

2709440039 is a deficient number, since it is larger than the sum of its proper divisors (26826241).

2709440039 is a wasteful number, since it uses less digits than its factorization.

2709440039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26826240.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 2709440039 is about 52052.2817847594. The cubic root of 2709440039 is about 1394.0976061164.

The spelling of 2709440039 in words is "two billion, seven hundred nine million, four hundred forty thousand, thirty-nine".