13809413 has 2 divisors, whose sum is σ = 13809414. Its totient is φ = 13809412.

The previous prime is 13809377. The next prime is 13809421. The reversal of 13809413 is 31490831.

13809413 is digitally balanced in base 2, 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., 12061729 + 1747684 = 3473^2 + 1322^2 .

It is a cyclic number.

It is not a de Polignac number, because 13809413 - 2⁸ = 13809157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13809443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6904706 + 6904707.

It is an arithmetic number, because the mean of its divisors is an integer number (6904707).

Almost surely, 2^13809413 is an apocalyptic number.

It is an amenable number.

13809413 is a deficient number, since it is larger than the sum of its proper divisors (1).

13809413 is an equidigital number, since it uses as much as digits as its factorization.

13809413 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 13809413 is about 3716.1018554394. The cubic root of 13809413 is about 239.9155547817.

The spelling of 13809413 in words is "thirteen million, eight hundred nine thousand, four hundred thirteen".