84086847 has 12 divisors (see below), whose sum is σ = 130801944. Its totient is φ = 51745680.

The previous prime is 84086839. The next prime is 84086857. The reversal of 84086847 is 74868048.

It is not a de Polignac number, because 84086847 - 2³ = 84086839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84086857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 359229 + ... + 359462.

It is an arithmetic number, because the mean of its divisors is an integer number (10900162).

Almost surely, 2^84086847 is an apocalyptic number.

84086847 is a deficient number, since it is larger than the sum of its proper divisors (46715097).

84086847 is a wasteful number, since it uses less digits than its factorization.

84086847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718710 (or 718707 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The square root of 84086847 is about 9169.8880582044. Note that the first 3 decimals coincide. The cubic root of 84086847 is about 438.1027937881.

The spelling of 84086847 in words is "eighty-four million, eighty-six thousand, eight hundred forty-seven".