2544997839 has 4 divisors (see below), whose sum is σ = 3393330456. Its totient is φ = 1696665224.

The previous prime is 2544997799. The next prime is 2544997853. The reversal of 2544997839 is 9387994452.

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 2544997839 - 2¹⁹ = 2544473551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2544997339) 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 3 ways as a sum of consecutive naturals, for example, 424166304 + ... + 424166309.

It is an arithmetic number, because the mean of its divisors is an integer number (848332614).

Almost surely, 2^2544997839 is an apocalyptic number.

2544997839 is a deficient number, since it is larger than the sum of its proper divisors (848332617).

2544997839 is an equidigital number, since it uses as much as digits as its factorization.

2544997839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848332616.

The product of its digits is 19595520, while the sum is 60.

The square root of 2544997839 is about 50447.9716044164. The cubic root of 2544997839 is about 1365.3032980047.

The spelling of 2544997839 in words is "two billion, five hundred forty-four million, nine hundred ninety-seven thousand, eight hundred thirty-nine".