12785929 has 4 divisors (see below), whose sum is σ = 13769476. Its totient is φ = 11802384.

The previous prime is 12785869. The next prime is 12785933. The reversal of 12785929 is 92958721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92958721 = 3137 ⋅29633.

It can be written as a sum of positive squares in 2 ways, for example, as 1550025 + 11235904 = 1245^2 + 3352^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12785929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12785939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491754 + ... + 491779.

It is an arithmetic number, because the mean of its divisors is an integer number (3442369).

Almost surely, 2^12785929 is an apocalyptic number.

It is an amenable number.

12785929 is a deficient number, since it is larger than the sum of its proper divisors (983547).

12785929 is an equidigital number, since it uses as much as digits as its factorization.

12785929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983546.

The product of its digits is 90720, while the sum is 43.

The square root of 12785929 is about 3575.7417412336. The cubic root of 12785929 is about 233.8356712669.

The spelling of 12785929 in words is "twelve million, seven hundred eighty-five thousand, nine hundred twenty-nine".