8289781983 has 18 divisors (see below), whose sum is σ = 13685912552. Its totient is φ = 4736605320.

The previous prime is 8289781967. The next prime is 8289781991. The reversal of 8289781983 is 3891879828.

It is not a de Polignac number, because 8289781983 - 2⁴ = 8289781967 is a prime.

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

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 8289781983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8289781943) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 716938 + ... + 728408.

Almost surely, 2^8289781983 is an apocalyptic number.

8289781983 is a deficient number, since it is larger than the sum of its proper divisors (5396130569).

8289781983 is an frugal number, since it uses more digits than its factorization.

8289781983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22955 (or 11481 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 63.

The square root of 8289781983 is about 91048.2398676658. The cubic root of 8289781983 is about 2023.8626531409.

Multiplying 8289781983 by its sum of digits (63), we get a square (522256264929 = 722673²).

8289781983 divided by its sum of digits (63) gives a square (131583841 = 11471²).

The spelling of 8289781983 in words is "eight billion, two hundred eighty-nine million, seven hundred eighty-one thousand, nine hundred eighty-three".