12943913 has 4 divisors (see below), whose sum is σ = 13107840. Its totient is φ = 12779988.

The previous prime is 12943901. The next prime is 12943927. The reversal of 12943913 is 31934921.

12943913 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12943913 - 2¹⁴ = 12927529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12943913.

It is not an unprimeable number, because it can be changed into a prime (12943813) 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, 81845 + ... + 82002.

It is an arithmetic number, because the mean of its divisors is an integer number (3276960).

Almost surely, 2^12943913 is an apocalyptic number.

It is an amenable number.

12943913 is a deficient number, since it is larger than the sum of its proper divisors (163927).

12943913 is an equidigital number, since it uses as much as digits as its factorization.

12943913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163926.

The product of its digits is 5832, while the sum is 32.

The square root of 12943913 is about 3597.7650006636. The cubic root of 12943913 is about 234.7948292236.

The spelling of 12943913 in words is "twelve million, nine hundred forty-three thousand, nine hundred thirteen".