12493871 has 4 divisors (see below), whose sum is σ = 13454952. Its totient is φ = 11532792.

The previous prime is 12493847. The next prime is 12493919. The reversal of 12493871 is 17839421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17839421 = 23 ⋅775627.

It is a cyclic number.

It is not a de Polignac number, because 12493871 - 2²² = 8299567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12493841) 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, 480521 + ... + 480546.

It is an arithmetic number, because the mean of its divisors is an integer number (3363738).

Almost surely, 2^12493871 is an apocalyptic number.

12493871 is a deficient number, since it is larger than the sum of its proper divisors (961081).

12493871 is an equidigital number, since it uses as much as digits as its factorization.

12493871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961080.

The product of its digits is 12096, while the sum is 35.

The square root of 12493871 is about 3534.6670281655. The cubic root of 12493871 is about 232.0415044155.

The spelling of 12493871 in words is "twelve million, four hundred ninety-three thousand, eight hundred seventy-one".