12944921 has 4 divisors (see below), whose sum is σ = 14121744. Its totient is φ = 11768100.

The previous prime is 12944891. The next prime is 12944923.

12944921 is nontrivially palindromic in base 10.

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 a cyclic number.

It is not a de Polignac number, because 12944921 - 2¹⁴ = 12928537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12944923) 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, 588395 + ... + 588416.

It is an arithmetic number, because the mean of its divisors is an integer number (3530436).

Almost surely, 2^12944921 is an apocalyptic number.

12944921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12944921 is a deficient number, since it is larger than the sum of its proper divisors (1176823).

12944921 is a wasteful number, since it uses less digits than its factorization.

12944921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176822.

The product of its digits is 5184, while the sum is 32.

The square root of 12944921 is about 3597.9050849070. The cubic root of 12944921 is about 234.8009239042.

The spelling of 12944921 in words is "twelve million, nine hundred forty-four thousand, nine hundred twenty-one".