3118909 has 2 divisors, whose sum is σ = 3118910. Its totient is φ = 3118908.

The previous prime is 3118901. The next prime is 3118931. The reversal of 3118909 is 9098113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1625625 + 1493284 = 1275^2 + 1222^2 .

It is an emirp because it is prime and its reverse (9098113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3118909 - 2³ = 3118901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3118901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1559454 + 1559455.

It is an arithmetic number, because the mean of its divisors is an integer number (1559455).

Almost surely, 2^3118909 is an apocalyptic number.

It is an amenable number.

3118909 is a deficient number, since it is larger than the sum of its proper divisors (1).

3118909 is an equidigital number, since it uses as much as digits as its factorization.

3118909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 3118909 is about 1766.0433177020. The cubic root of 3118909 is about 146.1058374387.

The spelling of 3118909 in words is "three million, one hundred eighteen thousand, nine hundred nine".