12790117 has 4 divisors (see below), whose sum is σ = 12808300. Its totient is φ = 12771936.

The previous prime is 12790109. The next prime is 12790147. The reversal of 12790117 is 71109721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71109721 = 23 ⋅3091727.

It can be written as a sum of positive squares in 2 ways, for example, as 12630916 + 159201 = 3554^2 + 399^2 .

It is a cyclic number.

It is not a de Polignac number, because 12790117 - 2³ = 12790109 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 (12790147) 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 3 ways as a sum of consecutive naturals, for example, 7992 + ... + 9457.

It is an arithmetic number, because the mean of its divisors is an integer number (3202075).

Almost surely, 2^12790117 is an apocalyptic number.

It is an amenable number.

12790117 is a deficient number, since it is larger than the sum of its proper divisors (18183).

12790117 is an equidigital number, since it uses as much as digits as its factorization.

12790117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18182.

The product of its (nonzero) digits is 882, while the sum is 28.

The square root of 12790117 is about 3576.3273060502. The cubic root of 12790117 is about 233.8611992487.

Adding to 12790117 its reverse (71109721), we get a palindrome (83899838).

The spelling of 12790117 in words is "twelve million, seven hundred ninety thousand, one hundred seventeen".