12918441 has 4 divisors (see below), whose sum is σ = 17224592. Its totient is φ = 8612292.

The previous prime is 12918421. The next prime is 12918443. The reversal of 12918441 is 14481921.

12918441 is digitally balanced in base 2, 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: 14481921 = 3 ⋅4827307.

It is not a de Polignac number, because 12918441 - 2¹⁸ = 12656297 is a prime.

It is a super-2 number, since 2×12918441² = 333772235740962, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12918399 and 12918408.

It is not an unprimeable number, because it can be changed into a prime (12918443) 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, 2153071 + ... + 2153076.

It is an arithmetic number, because the mean of its divisors is an integer number (4306148).

Almost surely, 2^12918441 is an apocalyptic number.

It is an amenable number.

12918441 is a deficient number, since it is larger than the sum of its proper divisors (4306151).

12918441 is an equidigital number, since it uses as much as digits as its factorization.

12918441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4306150.

The product of its digits is 2304, while the sum is 30.

The square root of 12918441 is about 3594.2232818789. The cubic root of 12918441 is about 234.6407124773.

The spelling of 12918441 in words is "twelve million, nine hundred eighteen thousand, four hundred forty-one".