84864193 has 2 divisors, whose sum is σ = 84864194. Its totient is φ = 84864192.

The previous prime is 84864191. The next prime is 84864209. The reversal of 84864193 is 39146848.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84860944 + 3249 = 9212^2 + 57^2 .

It is a cyclic number.

It is not a de Polignac number, because 84864193 - 2¹ = 84864191 is a prime.

Together with 84864191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (84864191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42432096 + 42432097.

It is an arithmetic number, because the mean of its divisors is an integer number (42432097).

Almost surely, 2^84864193 is an apocalyptic number.

It is an amenable number.

84864193 is a deficient number, since it is larger than the sum of its proper divisors (1).

84864193 is an equidigital number, since it uses as much as digits as its factorization.

84864193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 43.

The square root of 84864193 is about 9212.1763443825. The cubic root of 84864193 is about 439.4486775915.

The spelling of 84864193 in words is "eighty-four million, eight hundred sixty-four thousand, one hundred ninety-three".