9917015822 has 12 divisors (see below), whose sum is σ = 17304180840. Its totient is φ = 4250149596.

The previous prime is 9917015791. The next prime is 9917015893. The reversal of 9917015822 is 2285107199.

It is a happy number.

9917015822 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 50596922 + ... + 50597117.

It is an arithmetic number, because the mean of its divisors is an integer number (1442015070).

Almost surely, 2^9917015822 is an apocalyptic number.

9917015822 is a deficient number, since it is larger than the sum of its proper divisors (7387165018).

9917015822 is a wasteful number, since it uses less digits than its factorization.

9917015822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101194055 (or 101194048 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 9917015822 is about 99584.2147230172. The cubic root of 9917015822 is about 2148.4586625029.

The spelling of 9917015822 in words is "nine billion, nine hundred seventeen million, fifteen thousand, eight hundred twenty-two".