9955709 has 2 divisors, whose sum is σ = 9955710. Its totient is φ = 9955708.

The previous prime is 9955697. The next prime is 9955717. The reversal of 9955709 is 9075599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7562500 + 2393209 = 2750^2 + 1547^2 .

It is a cyclic number.

It is not a de Polignac number, because 9955709 - 2⁸ = 9955453 is a prime.

It is a super-2 number, since 2×9955709² = 198232283385362, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9955709.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9955739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4977854 + 4977855.

It is an arithmetic number, because the mean of its divisors is an integer number (4977855).

Almost surely, 2^9955709 is an apocalyptic number.

It is an amenable number.

9955709 is a deficient number, since it is larger than the sum of its proper divisors (1).

9955709 is an equidigital number, since it uses as much as digits as its factorization.

9955709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127575, while the sum is 44.

The square root of 9955709 is about 3155.2668666850. The cubic root of 9955709 is about 215.1249246949.

The spelling of 9955709 in words is "nine million, nine hundred fifty-five thousand, seven hundred nine".