12790109 has 2 divisors, whose sum is σ = 12790110. Its totient is φ = 12790108.

The previous prime is 12790091. The next prime is 12790147. The reversal of 12790109 is 90109721.

12790109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (12790091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7546009 + 5244100 = 2747^2 + 2290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12790109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12790159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6395054 + 6395055.

It is an arithmetic number, because the mean of its divisors is an integer number (6395055).

Almost surely, 2^12790109 is an apocalyptic number.

It is an amenable number.

12790109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12790109 is an equidigital number, since it uses as much as digits as its factorization.

12790109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 12790109 is about 3576.3261875841. The cubic root of 12790109 is about 233.8611504900.

The spelling of 12790109 in words is "twelve million, seven hundred ninety thousand, one hundred nine".