13416509 has 2 divisors, whose sum is σ = 13416510. Its totient is φ = 13416508.

The previous prime is 13416497. The next prime is 13416511. The reversal of 13416509 is 90561431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11539609 + 1876900 = 3397^2 + 1370^2 .

It is a cyclic number.

It is not a de Polignac number, because 13416509 - 2⁴ = 13416493 is a prime.

Together with 13416511, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13416539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6708254 + 6708255.

It is an arithmetic number, because the mean of its divisors is an integer number (6708255).

Almost surely, 2^13416509 is an apocalyptic number.

It is an amenable number.

13416509 is a deficient number, since it is larger than the sum of its proper divisors (1).

13416509 is an equidigital number, since it uses as much as digits as its factorization.

13416509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 13416509 is about 3662.8553069975. The cubic root of 13416509 is about 237.6182768215.

The spelling of 13416509 in words is "thirteen million, four hundred sixteen thousand, five hundred nine".