13216417 has 4 divisors (see below), whose sum is σ = 13300756. Its totient is φ = 13132080.

The previous prime is 13216403. The next prime is 13216433. The reversal of 13216417 is 71461231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9834496 + 3381921 = 3136^2 + 1839^2 .

It is a cyclic number.

It is not a de Polignac number, because 13216417 - 2¹⁹ = 12692129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13216391 and 13216400.

It is not an unprimeable number, because it can be changed into a prime (13216477) 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 in 3 ways as a sum of consecutive naturals, for example, 41934 + ... + 42247.

It is an arithmetic number, because the mean of its divisors is an integer number (3325189).

Almost surely, 2^13216417 is an apocalyptic number.

It is an amenable number.

13216417 is a deficient number, since it is larger than the sum of its proper divisors (84339).

13216417 is an equidigital number, since it uses as much as digits as its factorization.

13216417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84338.

The product of its digits is 1008, while the sum is 25.

The square root of 13216417 is about 3635.4390381356. The cubic root of 13216417 is about 236.4310863044.

Adding to 13216417 its reverse (71461231), we get a palindrome (84677648).

The spelling of 13216417 in words is "thirteen million, two hundred sixteen thousand, four hundred seventeen".