9988236477 has 24 divisors (see below), whose sum is σ = 14646348288. Its totient is φ = 6557997600.

The previous prime is 9988236397. The next prime is 9988236481. The reversal of 9988236477 is 7746328899.

9988236477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9988236477 - 2⁸ = 9988236221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9988236497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 625363 + ... + 641135.

It is an arithmetic number, because the mean of its divisors is an integer number (610264512).

Almost surely, 2^9988236477 is an apocalyptic number.

It is an amenable number.

9988236477 is a deficient number, since it is larger than the sum of its proper divisors (4658111811).

9988236477 is a wasteful number, since it uses less digits than its factorization.

9988236477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16841 (or 16838 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The square root of 9988236477 is about 99941.1650772593. The cubic root of 9988236477 is about 2153.5895671569.

The spelling of 9988236477 in words is "nine billion, nine hundred eighty-eight million, two hundred thirty-six thousand, four hundred seventy-seven".