108299909 has 2 divisors, whose sum is σ = 108299910. Its totient is φ = 108299908.

The previous prime is 108299899. The next prime is 108299951. The reversal of 108299909 is 909992801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56776225 + 51523684 = 7535^2 + 7178^2 .

It is an emirp because it is prime and its reverse (909992801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 108299909 - 2¹² = 108295813 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108299959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54149954 + 54149955.

It is an arithmetic number, because the mean of its divisors is an integer number (54149955).

Almost surely, 2^108299909 is an apocalyptic number.

It is an amenable number.

108299909 is a deficient number, since it is larger than the sum of its proper divisors (1).

108299909 is an equidigital number, since it uses as much as digits as its factorization.

108299909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 47.

The square root of 108299909 is about 10406.7242204259. The cubic root of 108299909 is about 476.6607191677.

The spelling of 108299909 in words is "one hundred eight million, two hundred ninety-nine thousand, nine hundred nine".