9976776798 has 16 divisors (see below), whose sum is σ = 20280661776. Its totient is φ = 3271074240.

The previous prime is 9976776739. The next prime is 9976776851. The reversal of 9976776798 is 8976776799.

It is a super-2 number, since 2×9976776798² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13629111 + ... + 13629842.

It is an arithmetic number, because the mean of its divisors is an integer number (1267541361).

Almost surely, 2^9976776798 is an apocalyptic number.

9976776798 is an abundant number, since it is smaller than the sum of its proper divisors (10303884978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9976776798 is a wasteful number, since it uses less digits than its factorization.

9976776798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27259019.

The product of its digits is 504094752, while the sum is 75.

The square root of 9976776798 is about 99883.8164969681. The cubic root of 9976776798 is about 2152.7656349375.

Subtracting from 9976776798 its reverse (8976776799), we obtain a palindrome (999999999).

The spelling of 9976776798 in words is "nine billion, nine hundred seventy-six million, seven hundred seventy-six thousand, seven hundred ninety-eight".