84579856 has 20 divisors (see below), whose sum is σ = 164129004. Its totient is φ = 42224000.

The previous prime is 84579853. The next prime is 84579857. The reversal of 84579856 is 65897548.

It can be written as a sum of positive squares in 2 ways, for example, as 40755456 + 43824400 = 6384^2 + 6620^2 .

It is not an unprimeable number, because it can be changed into a prime (84579851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7446 + ... + 14986.

Almost surely, 2^84579856 is an apocalyptic number.

It is an amenable number.

84579856 is a deficient number, since it is larger than the sum of its proper divisors (79549148).

84579856 is a wasteful number, since it uses less digits than its factorization.

84579856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8250 (or 8244 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 52.

The square root of 84579856 is about 9196.7307234691. The cubic root of 84579856 is about 438.9573383339.

The spelling of 84579856 in words is "eighty-four million, five hundred seventy-nine thousand, eight hundred fifty-six".