84556841 has 2 divisors, whose sum is σ = 84556842. Its totient is φ = 84556840.

The previous prime is 84556789. The next prime is 84556907. The reversal of 84556841 is 14865548.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80640400 + 3916441 = 8980^2 + 1979^2 .

It is a cyclic number.

It is not a de Polignac number, because 84556841 - 2⁶ = 84556777 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (84556741) 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 as a sum of consecutive naturals, namely, 42278420 + 42278421.

It is an arithmetic number, because the mean of its divisors is an integer number (42278421).

Almost surely, 2^84556841 is an apocalyptic number.

It is an amenable number.

84556841 is a deficient number, since it is larger than the sum of its proper divisors (1).

84556841 is an equidigital number, since it uses as much as digits as its factorization.

84556841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153600, while the sum is 41.

The square root of 84556841 is about 9195.4793784772. The cubic root of 84556841 is about 438.9175198708.

The spelling of 84556841 in words is "eighty-four million, five hundred fifty-six thousand, eight hundred forty-one".