84457475447 has 16 divisors (see below), whose sum is σ = 90001953792. Its totient is φ = 78978679680.

The previous prime is 84457475441. The next prime is 84457475449. The reversal of 84457475447 is 74457475448.

It is a cyclic number.

It is not a de Polignac number, because 84457475447 - 2¹⁸ = 84457213303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84457475441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1644122 + ... + 1694712.

It is an arithmetic number, because the mean of its divisors is an integer number (5625122112).

Almost surely, 2^84457475447 is an apocalyptic number.

84457475447 is a deficient number, since it is larger than the sum of its proper divisors (5544478345).

84457475447 is a wasteful number, since it uses less digits than its factorization.

84457475447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51238.

The product of its digits is 70246400, while the sum is 59.

Subtracting from 84457475447 its reverse (74457475448), we obtain a palindrome (9999999999).

The spelling of 84457475447 in words is "eighty-four billion, four hundred fifty-seven million, four hundred seventy-five thousand, four hundred forty-seven".