108863309 has 2 divisors, whose sum is σ = 108863310. Its totient is φ = 108863308.

The previous prime is 108863297. The next prime is 108863317. The reversal of 108863309 is 903368801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74874409 + 33988900 = 8653^2 + 5830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108863309 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108863009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54431654 + 54431655.

It is an arithmetic number, because the mean of its divisors is an integer number (54431655).

Almost surely, 2^108863309 is an apocalyptic number.

It is an amenable number.

108863309 is a deficient number, since it is larger than the sum of its proper divisors (1).

108863309 is an equidigital number, since it uses as much as digits as its factorization.

108863309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 108863309 is about 10433.7581436412. The cubic root of 108863309 is about 477.4858546836.

The spelling of 108863309 in words is "one hundred eight million, eight hundred sixty-three thousand, three hundred nine".