12905441 has 4 divisors (see below), whose sum is σ = 12912900. Its totient is φ = 12897984.

The previous prime is 12905437. The next prime is 12905467. The reversal of 12905441 is 14450921.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14450921 = 1823 ⋅7927.

It can be written as a sum of positive squares in 2 ways, for example, as 6145441 + 6760000 = 2479^2 + 2600^2 .

It is a cyclic number.

It is not a de Polignac number, because 12905441 - 2² = 12905437 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 12905441.

It is not an unprimeable number, because it can be changed into a prime (12905411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365 + ... + 5093.

It is an arithmetic number, because the mean of its divisors is an integer number (3228225).

Almost surely, 2^12905441 is an apocalyptic number.

It is an amenable number.

12905441 is a deficient number, since it is larger than the sum of its proper divisors (7459).

12905441 is an equidigital number, since it uses as much as digits as its factorization.

12905441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7458.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 12905441 is about 3592.4143691952. The cubic root of 12905441 is about 234.5619786984.

The spelling of 12905441 in words is "twelve million, nine hundred five thousand, four hundred forty-one".