9779986156 has 24 divisors (see below), whose sum is σ = 17215027200. Its totient is φ = 4861438800.

The previous prime is 9779986121. The next prime is 9779986169. The reversal of 9779986156 is 6516899779.

It is a junction number, because it is equal to n+sod(n) for n = 9779986091 and 9779986100.

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, 1808745 + ... + 1814143.

It is an arithmetic number, because the mean of its divisors is an integer number (717292800).

Almost surely, 2^9779986156 is an apocalyptic number.

It is an amenable number.

9779986156 is a deficient number, since it is larger than the sum of its proper divisors (7435041044).

9779986156 is a wasteful number, since it uses less digits than its factorization.

9779986156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7965 (or 7963 counting only the distinct ones).

The product of its digits is 51438240, while the sum is 67.

The square root of 9779986156 is about 98893.8125263659. The cubic root of 9779986156 is about 2138.5171953551.

The spelling of 9779986156 in words is "nine billion, seven hundred seventy-nine million, nine hundred eighty-six thousand, one hundred fifty-six".