9991795 has 8 divisors (see below), whose sum is σ = 13080240. Its totient is φ = 7266720.

The previous prime is 9991771. The next prime is 9991811. The reversal of 9991795 is 5971999.

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

It is not a de Polignac number, because 9991795 - 2¹¹ = 9989747 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90780 + ... + 90889.

It is an arithmetic number, because the mean of its divisors is an integer number (1635030).

Almost surely, 2^9991795 is an apocalyptic number.

9991795 is a deficient number, since it is larger than the sum of its proper divisors (3088445).

9991795 is a wasteful number, since it uses less digits than its factorization.

9991795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181685.

The product of its digits is 229635, while the sum is 49.

The square root of 9991795 is about 3160.9800695354. The cubic root of 9991795 is about 215.3845290914.

The spelling of 9991795 in words is "nine million, nine hundred ninety-one thousand, seven hundred ninety-five".