988398121893889 has 8 divisors (see below), whose sum is σ = 1133589365445440. Its totient is φ = 844204756305456.

The previous prime is 988398121893827. The next prime is 988398121893943.

988398121893889 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 988398121893889 - 2⁷ = 988398121893761 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 988398121893797 and 988398121893806.

It is not an unprimeable number, because it can be changed into a prime (988398121593889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249469488654 + ... + 249469492615.

It is an arithmetic number, because the mean of its divisors is an integer number (141698670680680).

Almost surely, 2^{988398121893889} is an apocalyptic number.

It is an amenable number.

988398121893889 is a deficient number, since it is larger than the sum of its proper divisors (145191243551551).

988398121893889 is a wasteful number, since it uses less digits than its factorization.

988398121893889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498938981559.

The product of its digits is 30958682112, while the sum is 94.

The spelling of 988398121893889 in words is "nine hundred eighty-eight trillion, three hundred ninety-eight billion, one hundred twenty-one million, eight hundred ninety-three thousand, eight hundred eighty-nine".