9779649882 has 16 divisors (see below), whose sum is σ = 19560414720. Its totient is φ = 3259697472.

The previous prime is 9779649877. The next prime is 9779649883. The reversal of 9779649882 is 2889469779.

It is a super-2 number, since 2×9779649882² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9779649883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106119 + ... + 175557.

It is an arithmetic number, because the mean of its divisors is an integer number (1222525920).

Almost surely, 2^9779649882 is an apocalyptic number.

9779649882 is an abundant number, since it is smaller than the sum of its proper divisors (9780764838).

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

9779649882 is a wasteful number, since it uses less digits than its factorization.

9779649882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92917.

The product of its digits is 109734912, while the sum is 69.

The square root of 9779649882 is about 98892.1123346043. The cubic root of 9779649882 is about 2138.4926848918.

The spelling of 9779649882 in words is "nine billion, seven hundred seventy-nine million, six hundred forty-nine thousand, eight hundred eighty-two".