12816941 has 4 divisors (see below), whose sum is σ = 12838332. Its totient is φ = 12795552.

The previous prime is 12816931. The next prime is 12816949. The reversal of 12816941 is 14961821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5900041 + 6916900 = 2429^2 + 2630^2 .

It is a cyclic number.

It is not a de Polignac number, because 12816941 - 2⁶ = 12816877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12816898 and 12816907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12816949) 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, 9770 + ... + 11003.

It is an arithmetic number, because the mean of its divisors is an integer number (3209583).

Almost surely, 2^12816941 is an apocalyptic number.

It is an amenable number.

12816941 is a deficient number, since it is larger than the sum of its proper divisors (21391).

12816941 is an equidigital number, since it uses as much as digits as its factorization.

12816941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21390.

The product of its digits is 3456, while the sum is 32.

The square root of 12816941 is about 3580.0755578619. The cubic root of 12816941 is about 234.0245731128.

The spelling of 12816941 in words is "twelve million, eight hundred sixteen thousand, nine hundred forty-one".