12873929 has 4 divisors (see below), whose sum is σ = 12888084. Its totient is φ = 12859776.

The previous prime is 12873871. The next prime is 12873943. The reversal of 12873929 is 92937821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10465225 + 2408704 = 3235^2 + 1552^2 .

It is a cyclic number.

It is not a de Polignac number, because 12873929 - 2⁸ = 12873673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12873229) 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, 5612 + ... + 7565.

It is an arithmetic number, because the mean of its divisors is an integer number (3222021).

Almost surely, 2^12873929 is an apocalyptic number.

It is an amenable number.

12873929 is a deficient number, since it is larger than the sum of its proper divisors (14155).

12873929 is an equidigital number, since it uses as much as digits as its factorization.

12873929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14154.

The product of its digits is 54432, while the sum is 41.

The square root of 12873929 is about 3588.0257802864. The cubic root of 12873929 is about 234.3709083493.

The spelling of 12873929 in words is "twelve million, eight hundred seventy-three thousand, nine hundred twenty-nine".