12817493 has 8 divisors (see below), whose sum is σ = 13832448. Its totient is φ = 11806704.

The previous prime is 12817481. The next prime is 12817517. The reversal of 12817493 is 39471821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12817493 - 2¹⁸ = 12555349 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 (12817093) 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 7 ways as a sum of consecutive naturals, for example, 8996 + ... + 10322.

It is an arithmetic number, because the mean of its divisors is an integer number (1729056).

Almost surely, 2^12817493 is an apocalyptic number.

12817493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12817493 is a deficient number, since it is larger than the sum of its proper divisors (1014955).

12817493 is a wasteful number, since it uses less digits than its factorization.

12817493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083.

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

The square root of 12817493 is about 3580.1526503768. The cubic root of 12817493 is about 234.0279327212.

The spelling of 12817493 in words is "twelve million, eight hundred seventeen thousand, four hundred ninety-three".