84284747 has 4 divisors (see below), whose sum is σ = 84326256. Its totient is φ = 84243240.

The previous prime is 84284743. The next prime is 84284777. The reversal of 84284747 is 74748248.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84284747 - 2² = 84284743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84284698 and 84284707.

It is not an unprimeable number, because it can be changed into a prime (84284743) 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 3 ways as a sum of consecutive naturals, for example, 17543 + ... + 21824.

It is an arithmetic number, because the mean of its divisors is an integer number (21081564).

Almost surely, 2^84284747 is an apocalyptic number.

84284747 is a deficient number, since it is larger than the sum of its proper divisors (41509).

84284747 is a wasteful number, since it uses less digits than its factorization.

84284747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41508.

The product of its digits is 401408, while the sum is 44.

The square root of 84284747 is about 9180.6724699229. The cubic root of 84284747 is about 438.4462189398.

The spelling of 84284747 in words is "eighty-four million, two hundred eighty-four thousand, seven hundred forty-seven".