12823879 has 4 divisors (see below), whose sum is σ = 13498840. Its totient is φ = 12148920.

The previous prime is 12823871. The next prime is 12823891. The reversal of 12823879 is 97832821.

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

It is a cyclic number.

It is not a de Polignac number, because 12823879 - 2³ = 12823871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12823871) 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, 337452 + ... + 337489.

It is an arithmetic number, because the mean of its divisors is an integer number (3374710).

Almost surely, 2^12823879 is an apocalyptic number.

12823879 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12823879 is a deficient number, since it is larger than the sum of its proper divisors (674961).

12823879 is an equidigital number, since it uses as much as digits as its factorization.

12823879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674960.

The product of its digits is 48384, while the sum is 40.

The square root of 12823879 is about 3581.0444007300. The cubic root of 12823879 is about 234.0667924849.

The spelling of 12823879 in words is "twelve million, eight hundred twenty-three thousand, eight hundred seventy-nine".