12997841 has 4 divisors (see below), whose sum is σ = 13349172. Its totient is φ = 12646512.

The previous prime is 12997801. The next prime is 12997847. The reversal of 12997841 is 14879921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14879921 = 7 ⋅2125703.

It can be written as a sum of positive squares in 2 ways, for example, as 11833600 + 1164241 = 3440^2 + 1079^2 .

It is a cyclic number.

It is not a de Polignac number, because 12997841 - 2²² = 8803537 is a prime.

It is a super-2 number, since 2×12997841² = 337887741322562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12997847) 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, 175610 + ... + 175683.

It is an arithmetic number, because the mean of its divisors is an integer number (3337293).

Almost surely, 2^12997841 is an apocalyptic number.

It is an amenable number.

12997841 is a deficient number, since it is larger than the sum of its proper divisors (351331).

12997841 is an equidigital number, since it uses as much as digits as its factorization.

12997841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351330.

The product of its digits is 36288, while the sum is 41.

The square root of 12997841 is about 3605.2518636012. The cubic root of 12997841 is about 235.1204513037.

The spelling of 12997841 in words is "twelve million, nine hundred ninety-seven thousand, eight hundred forty-one".