9825772979 has 16 divisors (see below), whose sum is σ = 10938724704. Its totient is φ = 8749977600.

The previous prime is 9825772963. The next prime is 9825772987. The reversal of 9825772979 is 9792775289.

It is a happy number.

9825772979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9825772979 - 2⁴ = 9825772963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9825772079) 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 15 ways as a sum of consecutive naturals, for example, 360557 + ... + 386849.

It is an arithmetic number, because the mean of its divisors is an integer number (683670294).

Almost surely, 2^9825772979 is an apocalyptic number.

9825772979 is a deficient number, since it is larger than the sum of its proper divisors (1112951725).

9825772979 is a wasteful number, since it uses less digits than its factorization.

9825772979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26998.

The product of its digits is 40007520, while the sum is 65.

The square root of 9825772979 is about 99125.0370945706. The cubic root of 9825772979 is about 2141.8492893922.

The spelling of 9825772979 in words is "nine billion, eight hundred twenty-five million, seven hundred seventy-two thousand, nine hundred seventy-nine".