9988983077 has 4 divisors (see below), whose sum is σ = 10040739660. Its totient is φ = 9937226496.

The previous prime is 9988983061. The next prime is 9988983089. The reversal of 9988983077 is 7703898899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7703898899 = 53 ⋅145356583.

It can be written as a sum of positive squares in 2 ways, for example, as 6343963201 + 3645019876 = 79649^2 + 60374^2 .

It is a cyclic number.

It is not a de Polignac number, because 9988983077 - 2⁴ = 9988983061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9988982998 and 9988983016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9988983577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25878002 + ... + 25878387.

It is an arithmetic number, because the mean of its divisors is an integer number (2510184915).

Almost surely, 2^9988983077 is an apocalyptic number.

It is an amenable number.

9988983077 is a deficient number, since it is larger than the sum of its proper divisors (51756583).

9988983077 is a wasteful number, since it uses less digits than its factorization.

9988983077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51756582.

The product of its (nonzero) digits is 54867456, while the sum is 68.

The square root of 9988983077 is about 99944.9002050630. The cubic root of 9988983077 is about 2153.6432246073.

The spelling of 9988983077 in words is "nine billion, nine hundred eighty-eight million, nine hundred eighty-three thousand, seventy-seven".