84489539666 has 32 divisors (see below), whose sum is σ = 145878236928. Its totient is φ = 35950628160.

The previous prime is 84489539647. The next prime is 84489539669. The reversal of 84489539666 is 66693598448.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 84489539596 and 84489539605.

It is not an unprimeable number, because it can be changed into a prime (84489539669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1751531 + ... + 1799121.

It is an arithmetic number, because the mean of its divisors is an integer number (4558694904).

Almost surely, 2^84489539666 is an apocalyptic number.

84489539666 is a deficient number, since it is larger than the sum of its proper divisors (61388697262).

84489539666 is a wasteful number, since it uses less digits than its factorization.

84489539666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48506.

The product of its digits is 268738560, while the sum is 68.

The spelling of 84489539666 in words is "eighty-four billion, four hundred eighty-nine million, five hundred thirty-nine thousand, six hundred sixty-six".