9940709 has 2 divisors, whose sum is σ = 9940710. Its totient is φ = 9940708.

The previous prime is 9940703. The next prime is 9940717. The reversal of 9940709 is 9070499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7756225 + 2184484 = 2785^2 + 1478^2 .

It is an emirp because it is prime and its reverse (9070499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9940709 - 2¹² = 9936613 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 (9940703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4970354 + 4970355.

It is an arithmetic number, because the mean of its divisors is an integer number (4970355).

Almost surely, 2^9940709 is an apocalyptic number.

It is an amenable number.

9940709 is a deficient number, since it is larger than the sum of its proper divisors (1).

9940709 is an equidigital number, since it uses as much as digits as its factorization.

9940709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 9940709 is about 3152.8889926542. Note that the first 3 decimals coincide. The cubic root of 9940709 is about 215.0168294019.

The spelling of 9940709 in words is "nine million, nine hundred forty thousand, seven hundred nine".