5197909 has 2 divisors, whose sum is σ = 5197910. Its totient is φ = 5197908.

The previous prime is 5197897. The next prime is 5197943. The reversal of 5197909 is 9097915.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4635409 + 562500 = 2153^2 + 750^2 .

It is a cyclic number.

It is not a de Polignac number, because 5197909 - 2⁵ = 5197877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5191909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2598954 + 2598955.

It is an arithmetic number, because the mean of its divisors is an integer number (2598955).

Almost surely, 2^5197909 is an apocalyptic number.

It is an amenable number.

5197909 is a deficient number, since it is larger than the sum of its proper divisors (1).

5197909 is an equidigital number, since it uses as much as digits as its factorization.

5197909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25515, while the sum is 40.

The square root of 5197909 is about 2279.8923220187. The cubic root of 5197909 is about 173.2245960835.

The spelling of 5197909 in words is "five million, one hundred ninety-seven thousand, nine hundred nine".