12287843 has 4 divisors (see below), whose sum is σ = 12318888. Its totient is φ = 12256800.

The previous prime is 12287837. The next prime is 12287861. The reversal of 12287843 is 34878221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34878221 = 7 ⋅4982603.

It is a cyclic number.

It is not a de Polignac number, because 12287843 - 2⁴ = 12287827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12287833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14921 + ... + 15722.

It is an arithmetic number, because the mean of its divisors is an integer number (3079722).

Almost surely, 2^12287843 is an apocalyptic number.

12287843 is a deficient number, since it is larger than the sum of its proper divisors (31045).

12287843 is an equidigital number, since it uses as much as digits as its factorization.

12287843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31044.

The product of its digits is 21504, while the sum is 35.

The square root of 12287843 is about 3505.4019740966. The cubic root of 12287843 is about 230.7589484621.

The spelling of 12287843 in words is "twelve million, two hundred eighty-seven thousand, eight hundred forty-three".