12779923 has 16 divisors (see below), whose sum is σ = 14414400. Its totient is φ = 11249280.

The previous prime is 12779917. The next prime is 12779939. The reversal of 12779923 is 32997721.

12779923 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12779923 - 2⁹ = 12779411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12779953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40938 + ... + 41248.

It is an arithmetic number, because the mean of its divisors is an integer number (900900).

Almost surely, 2^12779923 is an apocalyptic number.

12779923 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12779923 is a deficient number, since it is larger than the sum of its proper divisors (1634477).

12779923 is a wasteful number, since it uses less digits than its factorization.

12779923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462.

The product of its digits is 47628, while the sum is 40.

The square root of 12779923 is about 3574.9018168336. The cubic root of 12779923 is about 233.7990519229.

The spelling of 12779923 in words is "twelve million, seven hundred seventy-nine thousand, nine hundred twenty-three".