12799013 has 4 divisors (see below), whose sum is σ = 12806508. Its totient is φ = 12791520.

The previous prime is 12799009. The next prime is 12799021. The reversal of 12799013 is 31099721.

It is a happy number.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 7219969 + 5579044 = 2687^2 + 2362^2 .

It is a cyclic number.

It is not a de Polignac number, because 12799013 - 2² = 12799009 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 (12799043) 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, 203 + ... + 5063.

It is an arithmetic number, because the mean of its divisors is an integer number (3201627).

Almost surely, 2^12799013 is an apocalyptic number.

It is an amenable number.

12799013 is a deficient number, since it is larger than the sum of its proper divisors (7495).

12799013 is an equidigital number, since it uses as much as digits as its factorization.

12799013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7494.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 12799013 is about 3577.5708238971. The cubic root of 12799013 is about 233.9154063910.

The spelling of 12799013 in words is "twelve million, seven hundred ninety-nine thousand, thirteen".