2597544439 has 12 divisors (see below), whose sum is σ = 3030618864. Its totient is φ = 2219845824.

The previous prime is 2597544403. The next prime is 2597544449. The reversal of 2597544439 is 9344457952.

It is not a de Polignac number, because 2597544439 - 2¹¹ = 2597542391 is a prime.

It is a super-2 number, since 2×2597544439² = 13494474225159649442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2597544449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62139 + ... + 95164.

It is an arithmetic number, because the mean of its divisors is an integer number (252551572).

Almost surely, 2^2597544439 is an apocalyptic number.

2597544439 is a deficient number, since it is larger than the sum of its proper divisors (433074425).

2597544439 is a wasteful number, since it uses less digits than its factorization.

2597544439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157654 (or 157647 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 52.

The square root of 2597544439 is about 50966.1106913211. The cubic root of 2597544439 is about 1374.6358377106.

The spelling of 2597544439 in words is "two billion, five hundred ninety-seven million, five hundred forty-four thousand, four hundred thirty-nine".