12726499 has 4 divisors (see below), whose sum is σ = 12734280. Its totient is φ = 12718720.

The previous prime is 12726479. The next prime is 12726503. The reversal of 12726499 is 99462721.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 99462721 = 29 ⋅3429749.

It is a cyclic number.

It is not a de Polignac number, because 12726499 - 2⁹ = 12725987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12726479) 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, 382 + ... + 5059.

It is an arithmetic number, because the mean of its divisors is an integer number (3183570).

Almost surely, 2^12726499 is an apocalyptic number.

12726499 is a deficient number, since it is larger than the sum of its proper divisors (7781).

12726499 is an equidigital number, since it uses as much as digits as its factorization.

12726499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7780.

The product of its digits is 54432, while the sum is 40.

The square root of 12726499 is about 3567.4218982341. The cubic root of 12726499 is about 233.4728129785.

It can be divided in two parts, 12726 and 499, that added together give a square (13225 = 115²).

The spelling of 12726499 in words is "twelve million, seven hundred twenty-six thousand, four hundred ninety-nine".