84004844813 has 2 divisors, whose sum is σ = 84004844814. Its totient is φ = 84004844812.

The previous prime is 84004844797. The next prime is 84004844821. The reversal of 84004844813 is 31844840048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58613378404 + 25391466409 = 242102^2 + 159347^2 .

It is a cyclic number.

It is not a de Polignac number, because 84004844813 - 2⁴ = 84004844797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84004844843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42002422406 + 42002422407.

It is an arithmetic number, because the mean of its divisors is an integer number (42002422407).

Almost surely, 2^84004844813 is an apocalyptic number.

It is an amenable number.

84004844813 is a deficient number, since it is larger than the sum of its proper divisors (1).

84004844813 is an equidigital number, since it uses as much as digits as its factorization.

84004844813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 393216, while the sum is 44.

The spelling of 84004844813 in words is "eighty-four billion, four million, eight hundred forty-four thousand, eight hundred thirteen".