8997117998 has 8 divisors (see below), whose sum is σ = 14722556760. Its totient is φ = 4089599080.

The previous prime is 8997117977. The next prime is 8997118001.

8997117998 is nontrivially palindromic in base 10.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204479933 + ... + 204479976.

It is an arithmetic number, because the mean of its divisors is an integer number (1840319595).

Almost surely, 2^8997117998 is an apocalyptic number.

8997117998 is a deficient number, since it is larger than the sum of its proper divisors (5725438762).

8997117998 is a wasteful number, since it uses less digits than its factorization.

8997117998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408959922.

The product of its digits is 20575296, while the sum is 68.

The square root of 8997117998 is about 94853.1391046179. The cubic root of 8997117998 is about 2079.8617695059.

It can be divided in two parts, 899711 and 7998, that added together give a palindrome (907709).

The spelling of 8997117998 in words is "eight billion, nine hundred ninety-seven million, one hundred seventeen thousand, nine hundred ninety-eight".