9999888741 has 6 divisors (see below), whose sum is σ = 14444283750. Its totient is φ = 6666592488.

The previous prime is 9999888719. The next prime is 9999888751. The reversal of 9999888741 is 1478889999.

It can be written as a sum of positive squares in only one way, i.e., 7925450625 + 2074438116 = 89025^2 + 45546^2 .

It is not a de Polignac number, because 9999888741 - 2⁶ = 9999888677 is a prime.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 9999888741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999888751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555549366 + ... + 555549383.

It is an arithmetic number, because the mean of its divisors is an integer number (2407380625).

Almost surely, 2^9999888741 is an apocalyptic number.

It is an amenable number.

9999888741 is a deficient number, since it is larger than the sum of its proper divisors (4444395009).

9999888741 is a wasteful number, since it uses less digits than its factorization.

9999888741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111098755 (or 1111098752 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 72.

The square root of 9999888741 is about 99999.4437034527. The cubic root of 9999888741 is about 2154.4266999939.

The spelling of 9999888741 in words is "nine billion, nine hundred ninety-nine million, eight hundred eighty-eight thousand, seven hundred forty-one".