12983639 has 4 divisors (see below), whose sum is σ = 12991056. Its totient is φ = 12976224.

The previous prime is 12983623. The next prime is 12983657. The reversal of 12983639 is 93638921.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 93638921 = 953 ⋅98257.

It is a cyclic number.

It is not a de Polignac number, because 12983639 - 2⁴ = 12983623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12983596 and 12983605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12983239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542 + ... + 5124.

It is an arithmetic number, because the mean of its divisors is an integer number (3247764).

Almost surely, 2^12983639 is an apocalyptic number.

12983639 is a deficient number, since it is larger than the sum of its proper divisors (7417).

12983639 is an equidigital number, since it uses as much as digits as its factorization.

12983639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7416.

The product of its digits is 69984, while the sum is 41.

The square root of 12983639 is about 3603.2816986741. The cubic root of 12983639 is about 235.0347858571.

The spelling of 12983639 in words is "twelve million, nine hundred eighty-three thousand, six hundred thirty-nine".