13809011 has 2 divisors, whose sum is σ = 13809012. Its totient is φ = 13809010.

The previous prime is 13808969. The next prime is 13809013. The reversal of 13809011 is 11090831.

It is a strong prime.

It is an emirp because it is prime and its reverse (11090831) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13809011 is a prime.

It is a Sophie Germain prime.

Together with 13809013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13809013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6904505 + 6904506.

It is an arithmetic number, because the mean of its divisors is an integer number (6904506).

Almost surely, 2^13809011 is an apocalyptic number.

13809011 is a deficient number, since it is larger than the sum of its proper divisors (1).

13809011 is an equidigital number, since it uses as much as digits as its factorization.

13809011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 13809011 is about 3716.0477661085. The cubic root of 13809011 is about 239.9132267323.

Adding to 13809011 its reverse (11090831), we get a palindrome (24899842).

The spelling of 13809011 in words is "thirteen million, eight hundred nine thousand, eleven".