9796991 has 8 divisors (see below), whose sum is σ = 10271184. Its totient is φ = 9334080.

The previous prime is 9796973. The next prime is 9796999. The reversal of 9796991 is 1996979.

9796991 = 64² + 65² + ... + 309².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9796991 - 2¹⁰ = 9795967 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9796999) 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 in 7 ways as a sum of consecutive naturals, for example, 1016 + ... + 4541.

It is an arithmetic number, because the mean of its divisors is an integer number (1283898).

Almost surely, 2^9796991 is an apocalyptic number.

9796991 is a deficient number, since it is larger than the sum of its proper divisors (474193).

9796991 is a wasteful number, since it uses less digits than its factorization.

9796991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5641.

The product of its digits is 275562, while the sum is 50.

The square root of 9796991 is about 3130.0145367075. The cubic root of 9796991 is about 213.9755918824.

The spelling of 9796991 in words is "nine million, seven hundred ninety-six thousand, nine hundred ninety-one".