12784959 has 24 divisors (see below), whose sum is σ = 20896512. Its totient is φ = 7746840.

The previous prime is 12784951. The next prime is 12784991. The reversal of 12784959 is 95948721.

It is not a de Polignac number, because 12784959 - 2³ = 12784951 is a prime.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12784951) 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 23 ways as a sum of consecutive naturals, for example, 282 + ... + 5064.

It is an arithmetic number, because the mean of its divisors is an integer number (870688).

Almost surely, 2^12784959 is an apocalyptic number.

12784959 is a deficient number, since it is larger than the sum of its proper divisors (8111553).

12784959 is an equidigital number, since it uses as much as digits as its factorization.

12784959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4809 (or 4797 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 12784959 is about 3575.6061024671. The cubic root of 12784959 is about 233.8297578304.

The spelling of 12784959 in words is "twelve million, seven hundred eighty-four thousand, nine hundred fifty-nine".