9809765797 has 16 divisors (see below), whose sum is σ = 11124037120. Its totient is φ = 8575761600.

The previous prime is 9809765789. The next prime is 9809765807. The reversal of 9809765797 is 7975679089.

It is a cyclic number.

It is not a de Polignac number, because 9809765797 - 2³ = 9809765789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9809765717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1189147 + ... + 1197367.

It is an arithmetic number, because the mean of its divisors is an integer number (695252320).

Almost surely, 2^9809765797 is an apocalyptic number.

It is an amenable number.

9809765797 is a deficient number, since it is larger than the sum of its proper divisors (1314271323).

9809765797 is a wasteful number, since it uses less digits than its factorization.

9809765797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13084.

The product of its (nonzero) digits is 60011280, while the sum is 67.

The square root of 9809765797 is about 99044.2618075373. The cubic root of 9809765797 is about 2140.6855605527.

The spelling of 9809765797 in words is "nine billion, eight hundred nine million, seven hundred sixty-five thousand, seven hundred ninety-seven".