83927987443 has 16 divisors (see below), whose sum is σ = 89686810240. Its totient is φ = 78303931200.

The previous prime is 83927987431. The next prime is 83927987471. The reversal of 83927987443 is 34478972938.

It is a cyclic number.

It is not a de Polignac number, because 83927987443 - 2⁵ = 83927987411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83927987483) 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 15 ways as a sum of consecutive naturals, for example, 7786648 + ... + 7797418.

It is an arithmetic number, because the mean of its divisors is an integer number (5605425640).

Almost surely, 2^83927987443 is an apocalyptic number.

83927987443 is a deficient number, since it is larger than the sum of its proper divisors (5758822797).

83927987443 is a wasteful number, since it uses less digits than its factorization.

83927987443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16978.

The product of its digits is 73156608, while the sum is 64.

The spelling of 83927987443 in words is "eighty-three billion, nine hundred twenty-seven million, nine hundred eighty-seven thousand, four hundred forty-three".