12906481 has 4 divisors (see below), whose sum is σ = 14750272. Its totient is φ = 11062692.

The previous prime is 12906463. The next prime is 12906497. The reversal of 12906481 is 18460921.

It is a happy number.

12906481 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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: 18460921 = 509 ⋅36269.

It is a cyclic number.

It is not a de Polignac number, because 12906481 - 2⁵ = 12906449 is a prime.

It is a super-2 number, since 2×12906481² = 333154503606722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12903481) 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, 921885 + ... + 921898.

It is an arithmetic number, because the mean of its divisors is an integer number (3687568).

Almost surely, 2^12906481 is an apocalyptic number.

It is an amenable number.

12906481 is a deficient number, since it is larger than the sum of its proper divisors (1843791).

12906481 is an equidigital number, since it uses as much as digits as its factorization.

12906481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843790.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 12906481 is about 3592.5591157280. The cubic root of 12906481 is about 234.5682793460.

The spelling of 12906481 in words is "twelve million, nine hundred six thousand, four hundred eighty-one".