2439565139 has 16 divisors (see below), whose sum is σ = 2728370304. Its totient is φ = 2162126400.

The previous prime is 2439565111. The next prime is 2439565147. The reversal of 2439565139 is 9315659342.

2439565139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2439565139 - 2¹⁶ = 2439499603 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2439565093 and 2439565102.

It is not an unprimeable number, because it can be changed into a prime (2439565159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261719 + ... + 270879.

It is an arithmetic number, because the mean of its divisors is an integer number (170523144).

Almost surely, 2^2439565139 is an apocalyptic number.

2439565139 is a deficient number, since it is larger than the sum of its proper divisors (288805165).

2439565139 is a wasteful number, since it uses less digits than its factorization.

2439565139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9778.

The product of its digits is 874800, while the sum is 47.

The square root of 2439565139 is about 49391.9541929655. The cubic root of 2439565139 is about 1346.1831169257.

The spelling of 2439565139 in words is "two billion, four hundred thirty-nine million, five hundred sixty-five thousand, one hundred thirty-nine".