13009817 has 2 divisors, whose sum is σ = 13009818. Its totient is φ = 13009816.

The previous prime is 13009807. The next prime is 13009823. The reversal of 13009817 is 71890031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7529536 + 5480281 = 2744^2 + 2341^2 .

It is an emirp because it is prime and its reverse (71890031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13009817 - 2⁸ = 13009561 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13009817.

It is not a weakly prime, because it can be changed into another prime (13009807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6504908 + 6504909.

It is an arithmetic number, because the mean of its divisors is an integer number (6504909).

Almost surely, 2^13009817 is an apocalyptic number.

It is an amenable number.

13009817 is a deficient number, since it is larger than the sum of its proper divisors (1).

13009817 is an equidigital number, since it uses as much as digits as its factorization.

13009817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 13009817 is about 3606.9123915061. The cubic root of 13009817 is about 235.1926411942.

Adding to 13009817 its reverse (71890031), we get a palindrome (84899848).

The spelling of 13009817 in words is "thirteen million, nine thousand, eight hundred seventeen".