9984342891391 has 8 divisors (see below), whose sum is σ = 10903966541568. Its totient is φ = 9066711927000.

The previous prime is 9984342891329. The next prime is 9984342891409. The reversal of 9984342891391 is 1931982434899.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9984342891391 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 9984342891391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9984342897391) 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, 498160965 + ... + 498181006.

It is an arithmetic number, because the mean of its divisors is an integer number (1362995817696).

Almost surely, 2^{9984342891391} is an apocalyptic number.

9984342891391 is a deficient number, since it is larger than the sum of its proper divisors (919623650177).

9984342891391 is a wasteful number, since it uses less digits than its factorization.

9984342891391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996342893.

The product of its digits is 120932352, while the sum is 70.

The spelling of 9984342891391 in words is "nine trillion, nine hundred eighty-four billion, three hundred forty-two million, eight hundred ninety-one thousand, three hundred ninety-one".