9774220971 has 4 divisors (see below), whose sum is σ = 13032294632. Its totient is φ = 6516147312.

The previous prime is 9774220949. The next prime is 9774220979. The reversal of 9774220971 is 1790224779.

9774220971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 9774220971 - 2⁷ = 9774220843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9774220971.

It is not an unprimeable number, because it can be changed into a prime (9774220979) 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 3 ways as a sum of consecutive naturals, for example, 1629036826 + ... + 1629036831.

It is an arithmetic number, because the mean of its divisors is an integer number (3258073658).

Almost surely, 2^9774220971 is an apocalyptic number.

9774220971 is a deficient number, since it is larger than the sum of its proper divisors (3258073661).

9774220971 is a wasteful number, since it uses less digits than its factorization.

9774220971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258073660.

The product of its (nonzero) digits is 444528, while the sum is 48.

The square root of 9774220971 is about 98864.6598689340. The cubic root of 9774220971 is about 2138.0969026456.

The spelling of 9774220971 in words is "nine billion, seven hundred seventy-four million, two hundred twenty thousand, nine hundred seventy-one".