108459509 has 2 divisors, whose sum is σ = 108459510. Its totient is φ = 108459508.

The previous prime is 108459499. The next prime is 108459511. The reversal of 108459509 is 905954801.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70980625 + 37478884 = 8425^2 + 6122^2 .

It is an emirp because it is prime and its reverse (905954801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 108459509 - 2⁴ = 108459493 is a prime.

Together with 108459511, 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 (108459539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54229754 + 54229755.

It is an arithmetic number, because the mean of its divisors is an integer number (54229755).

Almost surely, 2^108459509 is an apocalyptic number.

It is an amenable number.

108459509 is a deficient number, since it is larger than the sum of its proper divisors (1).

108459509 is an equidigital number, since it uses as much as digits as its factorization.

108459509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 108459509 is about 10414.3895164335. The cubic root of 108459509 is about 476.8947535629.

The spelling of 108459509 in words is "one hundred eight million, four hundred fifty-nine thousand, five hundred nine".