12392587684 has 9 divisors (see below), whose sum is σ = 21687418081. Its totient is φ = 6196182520.

The previous prime is 12392587651. The next prime is 12392587687. The reversal of 12392587684 is 48678529321.

The square root of 12392587684 is 111322.

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

12392587684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3413130084 + 8979457600 = 58422^2 + 94760^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12392587687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 194814 + ... + 250474.

Almost surely, 2^12392587684 is an apocalyptic number.

12392587684 is the 111322-nd square number.

It is an amenable number.

12392587684 is a deficient number, since it is larger than the sum of its proper divisors (9294830397).

12392587684 is an frugal number, since it uses more digits than its factorization.

12392587684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111326 (or 55663 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 55.

The spelling of 12392587684 in words is "twelve billion, three hundred ninety-two million, five hundred eighty-seven thousand, six hundred eighty-four".