12860291 has 4 divisors (see below), whose sum is σ = 13102992. Its totient is φ = 12617592.

The previous prime is 12860273. The next prime is 12860293. The reversal of 12860291 is 19206821.

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 12860291 - 2⁶ = 12860227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12860293) 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, 121271 + ... + 121376.

It is an arithmetic number, because the mean of its divisors is an integer number (3275748).

Almost surely, 2^12860291 is an apocalyptic number.

12860291 is a deficient number, since it is larger than the sum of its proper divisors (242701).

12860291 is an equidigital number, since it uses as much as digits as its factorization.

12860291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242700.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 12860291 is about 3586.1247886821. The cubic root of 12860291 is about 234.2881188140.

The spelling of 12860291 in words is "twelve million, eight hundred sixty thousand, two hundred ninety-one".