9888342977 has 12 divisors (see below), whose sum is σ = 10326731580. Its totient is φ = 9465056640.

The previous prime is 9888342967. The next prime is 9888342983. The reversal of 9888342977 is 7792438889.

It can be written as a sum of positive squares in 6 ways, for example, as 74666881 + 9813676096 = 8641^2 + 99064^2 .

It is not a de Polignac number, because 9888342977 - 2⁸ = 9888342721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9888342967) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33599 + ... + 144587.

It is an arithmetic number, because the mean of its divisors is an integer number (860560965).

Almost surely, 2^9888342977 is an apocalyptic number.

It is an amenable number.

9888342977 is a deficient number, since it is larger than the sum of its proper divisors (438388603).

9888342977 is a wasteful number, since it uses less digits than its factorization.

9888342977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111124 (or 111083 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 65.

The square root of 9888342977 is about 99440.1477120785. The cubic root of 9888342977 is about 2146.3860669838.

The spelling of 9888342977 in words is "nine billion, eight hundred eighty-eight million, three hundred forty-two thousand, nine hundred seventy-seven".