12843491 has 4 divisors (see below), whose sum is σ = 13286400. Its totient is φ = 12400584.

The previous prime is 12843451. The next prime is 12843529. The reversal of 12843491 is 19434821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12843491 - 2¹⁴ = 12827107 is a prime.

It is a super-2 number, since 2×12843491² = 329910522134162, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (12843421) 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, 221411 + ... + 221468.

It is an arithmetic number, because the mean of its divisors is an integer number (3321600).

Almost surely, 2^12843491 is an apocalyptic number.

12843491 is a deficient number, since it is larger than the sum of its proper divisors (442909).

12843491 is an equidigital number, since it uses as much as digits as its factorization.

12843491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442908.

The product of its digits is 6912, while the sum is 32.

The square root of 12843491 is about 3583.7816618762. The cubic root of 12843491 is about 234.1860538456.

The spelling of 12843491 in words is "twelve million, eight hundred forty-three thousand, four hundred ninety-one".