12943937 has 4 divisors (see below), whose sum is σ = 12966576. Its totient is φ = 12921300.

The previous prime is 12943927. The next prime is 12943949. The reversal of 12943937 is 73934921.

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, and also an emirpimes, since its reverse is a distinct semiprime: 73934921 = 17 ⋅4349113.

It is a cyclic number.

It is not a de Polignac number, because 12943937 - 2⁶ = 12943873 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 12943937.

It is not an unprimeable number, because it can be changed into a prime (12943927) 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, 10439 + ... + 11612.

It is an arithmetic number, because the mean of its divisors is an integer number (3241644).

Almost surely, 2^12943937 is an apocalyptic number.

It is an amenable number.

12943937 is a deficient number, since it is larger than the sum of its proper divisors (22639).

12943937 is an equidigital number, since it uses as much as digits as its factorization.

12943937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22638.

The product of its digits is 40824, while the sum is 38.

The square root of 12943937 is about 3597.7683360661. The cubic root of 12943937 is about 234.7949743388.

The spelling of 12943937 in words is "twelve million, nine hundred forty-three thousand, nine hundred thirty-seven".