12439387024 has 15 divisors (see below), whose sum is σ = 24102176763. Its totient is φ = 6219470448.

The previous prime is 12439387021. The next prime is 12439387057. The reversal of 12439387024 is 42078393421.

The square root of 12439387024 is 111532.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12439387021) 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 2 ways as a sum of consecutive naturals, for example, 432187 + ... + 460069.

Almost surely, 2^12439387024 is an apocalyptic number.

12439387024 is the 111532-nd square number.

It is an amenable number.

12439387024 is a deficient number, since it is larger than the sum of its proper divisors (11662789739).

12439387024 is an frugal number, since it uses more digits than its factorization.

12439387024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55774 (or 27885 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 12439387024 in words is "twelve billion, four hundred thirty-nine million, three hundred eighty-seven thousand, twenty-four".