8999559998 has 16 divisors (see below), whose sum is σ = 15859364976. Its totient is φ = 3776039040.

The previous prime is 8999559971. The next prime is 8999560013.

8999559998 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15733211 + ... + 15733782.

It is an arithmetic number, because the mean of its divisors is an integer number (991210311).

Almost surely, 2^8999559998 is an apocalyptic number.

8999559998 is a deficient number, since it is larger than the sum of its proper divisors (6859804978).

8999559998 is a wasteful number, since it uses less digits than its factorization.

8999559998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31467019.

The product of its digits is 850305600, while the sum is 80.

The square root of 8999559998 is about 94866.0107625487. The cubic root of 8999559998 is about 2080.0499246831.

The spelling of 8999559998 in words is "eight billion, nine hundred ninety-nine million, five hundred fifty-nine thousand, nine hundred ninety-eight".