9988236479 has 8 divisors (see below), whose sum is σ = 10820213040. Its totient is φ = 9219908568.

The previous prime is 9988236397. The next prime is 9988236481. The reversal of 9988236479 is 9746328899.

It is not a de Polignac number, because 9988236479 - 2²⁸ = 9719801023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9988236779) 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, 2270957 + ... + 2275350.

It is an arithmetic number, because the mean of its divisors is an integer number (1352526630).

Almost surely, 2^9988236479 is an apocalyptic number.

9988236479 is a deficient number, since it is larger than the sum of its proper divisors (831976561).

9988236479 is an equidigital number, since it uses as much as digits as its factorization.

9988236479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4546346 (or 4546320 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 65.

The square root of 9988236479 is about 99941.1650872652. The cubic root of 9988236479 is about 2153.5895673006.

The spelling of 9988236479 in words is "nine billion, nine hundred eighty-eight million, two hundred thirty-six thousand, four hundred seventy-nine".