12744491 has 4 divisors (see below), whose sum is σ = 12786312. Its totient is φ = 12702672.

The previous prime is 12744463. The next prime is 12744527. The reversal of 12744491 is 19444721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19444721 = 37 ⋅525533.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12744491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12774491) 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, 20450 + ... + 21063.

It is an arithmetic number, because the mean of its divisors is an integer number (3196578).

Almost surely, 2^12744491 is an apocalyptic number.

12744491 is a deficient number, since it is larger than the sum of its proper divisors (41821).

12744491 is an equidigital number, since it uses as much as digits as its factorization.

12744491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41820.

The product of its digits is 8064, while the sum is 32.

The square root of 12744491 is about 3569.9427166273. The cubic root of 12744491 is about 233.5827846961.

The spelling of 12744491 in words is "twelve million, seven hundred forty-four thousand, four hundred ninety-one".