9983456847 has 128 divisors (see below), whose sum is σ = 18832128000. Its totient is φ = 5087370240.

The previous prime is 9983456723. The next prime is 9983456849. The reversal of 9983456847 is 7486543899.

It is not a de Polignac number, because 9983456847 - 2⁸ = 9983456591 is a prime.

It is a super-2 number, since 2×9983456847² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9983456849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8842179 + ... + 8843307.

It is an arithmetic number, because the mean of its divisors is an integer number (147126000).

Almost surely, 2^9983456847 is an apocalyptic number.

9983456847 is the 49959-th decagonal number.

9983456847 is a deficient number, since it is larger than the sum of its proper divisors (8848671153).

9983456847 is a wasteful number, since it uses less digits than its factorization.

9983456847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278 (or 1272 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 63.

The square root of 9983456847 is about 99917.2499971852. The cubic root of 9983456847 is about 2153.2459962091.

The spelling of 9983456847 in words is "nine billion, nine hundred eighty-three million, four hundred fifty-six thousand, eight hundred forty-seven".