12943963 has 4 divisors (see below), whose sum is σ = 13506768. Its totient is φ = 12381160.

The previous prime is 12943961. The next prime is 12943981. The reversal of 12943963 is 36934921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36934921 = 281 ⋅131441.

It is a cyclic number.

It is not a de Polignac number, because 12943963 - 2¹ = 12943961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12943961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281368 + ... + 281413.

It is an arithmetic number, because the mean of its divisors is an integer number (3376692).

Almost surely, 2^12943963 is an apocalyptic number.

12943963 is a deficient number, since it is larger than the sum of its proper divisors (562805).

12943963 is an equidigital number, since it uses as much as digits as its factorization.

12943963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562804.

The product of its digits is 34992, while the sum is 37.

The square root of 12943963 is about 3597.7719494154. The cubic root of 12943963 is about 234.7951315466.

The spelling of 12943963 in words is "twelve million, nine hundred forty-three thousand, nine hundred sixty-three".