9600991 has 2 divisors, whose sum is σ = 9600992. Its totient is φ = 9600990.

The previous prime is 9600977. The next prime is 9601013. The reversal of 9600991 is 1990069.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1990069) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9600991 - 2¹¹ = 9598943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9600091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4800495 + 4800496.

It is an arithmetic number, because the mean of its divisors is an integer number (4800496).

Almost surely, 2^9600991 is an apocalyptic number.

9600991 is a deficient number, since it is larger than the sum of its proper divisors (1).

9600991 is an equidigital number, since it uses as much as digits as its factorization.

9600991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 9600991 is about 3098.5465947763. The cubic root of 9600991 is about 212.5390267421.

It can be divided in two parts, 96009 and 91, that added together give a square (96100 = 310²).

The spelling of 9600991 in words is "nine million, six hundred thousand, nine hundred ninety-one".