9772992779 has 16 divisors (see below), whose sum is σ = 11609568000. Its totient is φ = 8126687520.

The previous prime is 9772992731. The next prime is 9772992797.

9772992779 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 9772992779 - 2¹⁶ = 9772927243 is a prime.

It is a super-2 number, since 2×9772992779² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9772992379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 800159 + ... + 812280.

It is an arithmetic number, because the mean of its divisors is an integer number (725598000).

Almost surely, 2^9772992779 is an apocalyptic number.

9772992779 is a deficient number, since it is larger than the sum of its proper divisors (1836575221).

9772992779 is a wasteful number, since it uses less digits than its factorization.

9772992779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612498.

The product of its digits is 63011844, while the sum is 68.

The square root of 9772992779 is about 98858.4481923523. The cubic root of 9772992779 is about 2138.0073438113.

The spelling of 9772992779 in words is "nine billion, seven hundred seventy-two million, nine hundred ninety-two thousand, seven hundred seventy-nine".