9722748869 has 2 divisors, whose sum is σ = 9722748870. Its totient is φ = 9722748868.

The previous prime is 9722748809. The next prime is 9722748943. The reversal of 9722748869 is 9688472279.

9722748869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9271186369 + 451562500 = 96287^2 + 21250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9722748869 is a prime.

It is a super-2 number, since 2×9722748869² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9722748809) 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 as a sum of consecutive naturals, namely, 4861374434 + 4861374435.

It is an arithmetic number, because the mean of its divisors is an integer number (4861374435).

Almost surely, 2^9722748869 is an apocalyptic number.

It is an amenable number.

9722748869 is a deficient number, since it is larger than the sum of its proper divisors (1).

9722748869 is an equidigital number, since it uses as much as digits as its factorization.

9722748869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24385536, while the sum is 62.

The square root of 9722748869 is about 98604.0002687518. Note that the first 3 decimals coincide. The cubic root of 9722748869 is about 2134.3371454961.

The spelling of 9722748869 in words is "nine billion, seven hundred twenty-two million, seven hundred forty-eight thousand, eight hundred sixty-nine".