84843105447 has 16 divisors (see below), whose sum is σ = 114722288640. Its totient is φ = 55767684000.

The previous prime is 84843105437. The next prime is 84843105463. The reversal of 84843105447 is 74450134848.

It is a de Polignac number, because none of the positive numbers 2^k-84843105447 is a prime.

It is a super-2 number, since 2×84843105447² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84843105396 and 84843105405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84843105407) 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, 513379 + ... + 658212.

It is an arithmetic number, because the mean of its divisors is an integer number (7170143040).

Almost surely, 2^84843105447 is an apocalyptic number.

84843105447 is a deficient number, since it is larger than the sum of its proper divisors (29879183193).

84843105447 is a wasteful number, since it uses less digits than its factorization.

84843105447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171934.

The product of its (nonzero) digits is 1720320, while the sum is 48.

The spelling of 84843105447 in words is "eighty-four billion, eight hundred forty-three million, one hundred five thousand, four hundred forty-seven".