9805120797 has 8 divisors (see below), whose sum is σ = 13124365056. Its totient is φ = 6511311872.

The previous prime is 9805120781. The next prime is 9805120811. The reversal of 9805120797 is 7970215089.

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 9805120797 - 2⁴ = 9805120781 is a prime.

It is a super-2 number, since 2×9805120797² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9805120697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6357933 + ... + 6359474.

It is an arithmetic number, because the mean of its divisors is an integer number (1640545632).

Almost surely, 2^9805120797 is an apocalyptic number.

It is an amenable number.

9805120797 is a deficient number, since it is larger than the sum of its proper divisors (3319244259).

9805120797 is a wasteful number, since it uses less digits than its factorization.

9805120797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12717667.

The product of its (nonzero) digits is 317520, while the sum is 48.

The square root of 9805120797 is about 99020.8099189256. The cubic root of 9805120797 is about 2140.3476301513.

The spelling of 9805120797 in words is "nine billion, eight hundred five million, one hundred twenty thousand, seven hundred ninety-seven".