988396693889 has 16 divisors (see below), whose sum is σ = 1113897208320. Its totient is φ = 868882224000.

The previous prime is 988396693841. The next prime is 988396693943.

988396693889 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 988396693889 - 2²⁴ = 988379916673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 988396693889.

It is not an unprimeable number, because it can be changed into a prime (988396693489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 684782 + ... + 1563879.

It is an arithmetic number, because the mean of its divisors is an integer number (69618575520).

Almost surely, 2^988396693889 is an apocalyptic number.

It is an amenable number.

988396693889 is a deficient number, since it is larger than the sum of its proper divisors (125500514431).

988396693889 is a wasteful number, since it uses less digits than its factorization.

988396693889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249992.

The product of its digits is 8707129344, while the sum is 86.

The spelling of 988396693889 in words is "nine hundred eighty-eight billion, three hundred ninety-six million, six hundred ninety-three thousand, eight hundred eighty-nine".