9999888743 has 8 divisors (see below), whose sum is σ = 10771093200. Its totient is φ = 9228967488.

The previous prime is 9999888719. The next prime is 9999888751. The reversal of 9999888743 is 3478889999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9999888743 - 2⁸ = 9999888487 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999878743) 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, 5603 + ... + 141531.

It is an arithmetic number, because the mean of its divisors is an integer number (1346386650).

Almost surely, 2^9999888743 is an apocalyptic number.

9999888743 is a deficient number, since it is larger than the sum of its proper divisors (771204457).

9999888743 is a wasteful number, since it uses less digits than its factorization.

9999888743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141601.

The product of its digits is 282175488, while the sum is 74.

The square root of 9999888743 is about 99999.4437134527. The cubic root of 9999888743 is about 2154.4267001376.

The spelling of 9999888743 in words is "nine billion, nine hundred ninety-nine million, eight hundred eighty-eight thousand, seven hundred forty-three".