12499013 has 4 divisors (see below), whose sum is σ = 12509760. Its totient is φ = 12488268.

The previous prime is 12499001. The next prime is 12499021. The reversal of 12499013 is 31099421.

It is a happy number.

12499013 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31099421 = 997 ⋅31193.

It is a cyclic number.

It is not a de Polignac number, because 12499013 - 2⁶ = 12498949 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 (12499813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3383 + ... + 6036.

It is an arithmetic number, because the mean of its divisors is an integer number (3127440).

Almost surely, 2^12499013 is an apocalyptic number.

It is an amenable number.

12499013 is a deficient number, since it is larger than the sum of its proper divisors (10747).

12499013 is an equidigital number, since it uses as much as digits as its factorization.

12499013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10746.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 12499013 is about 3535.3943202987. The cubic root of 12499013 is about 232.0733331890.

The spelling of 12499013 in words is "twelve million, four hundred ninety-nine thousand, thirteen".