9999888698 has 8 divisors (see below), whose sum is σ = 15001832340. Its totient is φ = 4999277920.

The previous prime is 9999888677. The next prime is 9999888719. The reversal of 9999888698 is 8968889999.

It is an interprime number because it is at equal distance from previous prime (9999888677) and next prime (9999888719).

It can be written as a sum of positive squares in 2 ways, for example, as 9948666049 + 51222649 = 99743^2 + 7157^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 314243 + ... + 344598.

Almost surely, 2^9999888698 is an apocalyptic number.

9999888698 is a deficient number, since it is larger than the sum of its proper divisors (5001943642).

9999888698 is a wasteful number, since it uses less digits than its factorization.

9999888698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666432.

The product of its digits is 1451188224, while the sum is 83.

The square root of 9999888698 is about 99999.4434884515. The cubic root of 9999888698 is about 2154.4266969059.

The spelling of 9999888698 in words is "nine billion, nine hundred ninety-nine million, eight hundred eighty-eight thousand, six hundred ninety-eight".