13726109 has 2 divisors, whose sum is σ = 13726110. Its totient is φ = 13726108.

The previous prime is 13726081. The next prime is 13726127. The reversal of 13726109 is 90162731.

13726109 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12581209 + 1144900 = 3547^2 + 1070^2 .

It is a cyclic number.

It is not a de Polignac number, because 13726109 - 2¹⁶ = 13660573 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p₈₉₃₄₃₂ and since 13726109 and 893432 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13726129) 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 as a sum of consecutive naturals, namely, 6863054 + 6863055.

It is an arithmetic number, because the mean of its divisors is an integer number (6863055).

Almost surely, 2^13726109 is an apocalyptic number.

It is an amenable number.

13726109 is a deficient number, since it is larger than the sum of its proper divisors (1).

13726109 is an equidigital number, since it uses as much as digits as its factorization.

13726109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 13726109 is about 3704.8763812036. The cubic root of 13726109 is about 239.4321587014.

The spelling of 13726109 in words is "thirteen million, seven hundred twenty-six thousand, one hundred nine".