9722869639 has 12 divisors (see below), whose sum is σ = 11905555800. Its totient is φ = 7895261808.

The previous prime is 9722869633. The next prime is 9722869697. The reversal of 9722869639 is 9369682279.

9722869639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9722869639 - 2¹⁹ = 9722345351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9722869633) 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 11 ways as a sum of consecutive naturals, for example, 5220804 + ... + 5222665.

It is an arithmetic number, because the mean of its divisors is an integer number (992129650).

Almost surely, 2^9722869639 is an apocalyptic number.

9722869639 is a deficient number, since it is larger than the sum of its proper divisors (2182686161).

9722869639 is a wasteful number, since it uses less digits than its factorization.

9722869639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10443502 (or 10443495 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 61.

The square root of 9722869639 is about 98604.6126659397. The cubic root of 9722869639 is about 2134.3459826002.

The spelling of 9722869639 in words is "nine billion, seven hundred twenty-two million, eight hundred sixty-nine thousand, six hundred thirty-nine".