12870443 has 4 divisors (see below), whose sum is σ = 13033440. Its totient is φ = 12707448.

The previous prime is 12870421. The next prime is 12870449. The reversal of 12870443 is 34407821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34407821 = 7 ⋅4915403.

It is a cyclic number.

It is not a de Polignac number, because 12870443 - 2¹⁶ = 12804907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12870449) 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, 81380 + ... + 81537.

It is an arithmetic number, because the mean of its divisors is an integer number (3258360).

Almost surely, 2^12870443 is an apocalyptic number.

12870443 is a deficient number, since it is larger than the sum of its proper divisors (162997).

12870443 is an equidigital number, since it uses as much as digits as its factorization.

12870443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162996.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 12870443 is about 3587.5399649342. The cubic root of 12870443 is about 234.3497521366.

The spelling of 12870443 in words is "twelve million, eight hundred seventy thousand, four hundred forty-three".