12392 has 8 divisors (see below), whose sum is σ = 23250. Its totient is φ = 6192.

The previous prime is 12391. The next prime is 12401. The reversal of 12392 is 29321.

It can be written as a sum of positive squares in only one way, i.e., 11236 + 1156 = 106^2 + 34^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 12392.

It is not an unprimeable number, because it can be changed into a prime (12391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767 + ... + 782.

2¹²³⁹² is an apocalyptic number.

It is an amenable number.

12392 is a deficient number, since it is larger than the sum of its proper divisors (10858).

12392 is a wasteful number, since it uses less digits than its factorization.

12392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555 (or 1551 counting only the distinct ones).

The product of its digits is 108, while the sum is 17.

The square root of 12392 is about 111.3193604006. The cubic root of 12392 is about 23.1409118636.

It can be divided in two parts, 12 and 392, that added together give a palindrome (404).

The spelling of 12392 in words is "twelve thousand, three hundred ninety-two".