9977288886 has 24 divisors (see below), whose sum is σ = 22418106984. Its totient is φ = 3325762800.

The previous prime is 9977288861. The next prime is 9977288891. The reversal of 9977288886 is 6888827799.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10264215 + ... + 10265186.

It is an arithmetic number, because the mean of its divisors is an integer number (934087791).

Almost surely, 2^9977288886 is an apocalyptic number.

9977288886 is an abundant number, since it is smaller than the sum of its proper divisors (12440818098).

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

9977288886 is a wasteful number, since it uses less digits than its factorization.

9977288886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20529418 (or 20529406 counting only the distinct ones).

The product of its digits is 195084288, while the sum is 72.

The square root of 9977288886 is about 99886.3798823443. The cubic root of 9977288886 is about 2152.8024666922.

The spelling of 9977288886 in words is "nine billion, nine hundred seventy-seven million, two hundred eighty-eight thousand, eight hundred eighty-six".