13841309 has 2 divisors, whose sum is σ = 13841310. Its totient is φ = 13841308.

The previous prime is 13841299. The next prime is 13841357. The reversal of 13841309 is 90314831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11035684 + 2805625 = 3322^2 + 1675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13841309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13841209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6920654 + 6920655.

It is an arithmetic number, because the mean of its divisors is an integer number (6920655).

Almost surely, 2^13841309 is an apocalyptic number.

It is an amenable number.

13841309 is a deficient number, since it is larger than the sum of its proper divisors (1).

13841309 is an equidigital number, since it uses as much as digits as its factorization.

13841309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 13841309 is about 3720.3909740779. The cubic root of 13841309 is about 240.1001260465.

It can be divided in two parts, 1384 and 1309, that multiplied together give a triangular number (1811656 = T₁₉₀₃).

The spelling of 13841309 in words is "thirteen million, eight hundred forty-one thousand, three hundred nine".