7109 has 2 divisors, whose sum is σ = 7110.
Its totient is φ = 7108.
The previous prime is 7103. The next prime is 7121. The reversal of 7109 is 9017.
7109 is nontrivially palindromic in base 6.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 4900 + 2209 = 70^2 + 47^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-7109 is a prime.
It is a Chen prime.
7109 is an undulating number in base 6.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (7103) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3554 + 3555.
It is an arithmetic number, because the mean of its divisors is an integer number (3555).
It is an amenable number.
7109 is a deficient number, since it is larger than the sum of its proper divisors (1).
7109 is an equidigital number, since it uses as much as digits as its factorization.
7109 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 63, while the sum is 17.
The square root of 7109 is about 84.3148859929.
The cubic root of 7109 is about 19.2280911142.
The spelling of 7109 in words is "seven thousand, one hundred nine".