108643009 has 2 divisors, whose sum is σ = 108643010. Its totient is φ = 108643008.

The previous prime is 108642977. The next prime is 108643021. The reversal of 108643009 is 900346801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74770609 + 33872400 = 8647^2 + 5820^2 .

It is a cyclic number.

It is not a de Polignac number, because 108643009 - 2⁵ = 108642977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (108643049) 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, 54321504 + 54321505.

It is an arithmetic number, because the mean of its divisors is an integer number (54321505).

Almost surely, 2^108643009 is an apocalyptic number.

It is an amenable number.

108643009 is a deficient number, since it is larger than the sum of its proper divisors (1).

108643009 is an equidigital number, since it uses as much as digits as its factorization.

108643009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 108643009 is about 10423.1957191641. The cubic root of 108643009 is about 477.1635508997.

The spelling of 108643009 in words is "one hundred eight million, six hundred forty-three thousand, nine".