84198493 has 2 divisors, whose sum is σ = 84198494. Its totient is φ = 84198492.

The previous prime is 84198463. The next prime is 84198529. The reversal of 84198493 is 39489148.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63568729 + 20629764 = 7973^2 + 4542^2 .

It is a cyclic number.

It is not a de Polignac number, because 84198493 - 2¹⁷ = 84067421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84198463) 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, 42099246 + 42099247.

It is an arithmetic number, because the mean of its divisors is an integer number (42099247).

Almost surely, 2^84198493 is an apocalyptic number.

It is an amenable number.

84198493 is a deficient number, since it is larger than the sum of its proper divisors (1).

84198493 is an equidigital number, since it uses as much as digits as its factorization.

84198493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 46.

The square root of 84198493 is about 9175.9736813049. The cubic root of 84198493 is about 438.2966044908.

The spelling of 84198493 in words is "eighty-four million, one hundred ninety-eight thousand, four hundred ninety-three".