109169309 has 2 divisors, whose sum is σ = 109169310. Its totient is φ = 109169308.

The previous prime is 109169287. The next prime is 109169317. The reversal of 109169309 is 903961901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86081284 + 23088025 = 9278^2 + 4805^2 .

It is an emirp because it is prime and its reverse (903961901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109169309 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 (109169399) 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, 54584654 + 54584655.

It is an arithmetic number, because the mean of its divisors is an integer number (54584655).

Almost surely, 2^109169309 is an apocalyptic number.

It is an amenable number.

109169309 is a deficient number, since it is larger than the sum of its proper divisors (1).

109169309 is an equidigital number, since it uses as much as digits as its factorization.

109169309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13122, while the sum is 38.

The square root of 109169309 is about 10448.4117931866. The cubic root of 109169309 is about 477.9328188235.

The spelling of 109169309 in words is "one hundred nine million, one hundred sixty-nine thousand, three hundred nine".