2499139439 has 8 divisors (see below), whose sum is σ = 2553015168. Its totient is φ = 2445680160.

The previous prime is 2499139421. The next prime is 2499139441. The reversal of 2499139439 is 9349319942.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2499139439 - 2²⁰ = 2498090863 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 (2499139459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91967 + ... + 116000.

It is an arithmetic number, because the mean of its divisors is an integer number (319126896).

Almost surely, 2^2499139439 is an apocalyptic number.

2499139439 is a deficient number, since it is larger than the sum of its proper divisors (53875729).

2499139439 is a wasteful number, since it uses less digits than its factorization.

2499139439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208225.

The product of its digits is 1889568, while the sum is 53.

The square root of 2499139439 is about 49991.3936493073. The cubic root of 2499139439 is about 1357.0530622963.

The spelling of 2499139439 in words is "two billion, four hundred ninety-nine million, one hundred thirty-nine thousand, four hundred thirty-nine".