84548489 has 2 divisors, whose sum is σ = 84548490. Its totient is φ = 84548488.

The previous prime is 84548479. The next prime is 84548491. The reversal of 84548489 is 98484548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81631225 + 2917264 = 9035^2 + 1708^2 .

It is a cyclic number.

It is not a de Polignac number, because 84548489 - 2¹⁶ = 84482953 is a prime.

Together with 84548491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84548419) 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, 42274244 + 42274245.

It is an arithmetic number, because the mean of its divisors is an integer number (42274245).

Almost surely, 2^84548489 is an apocalyptic number.

It is an amenable number.

84548489 is a deficient number, since it is larger than the sum of its proper divisors (1).

84548489 is an equidigital number, since it uses as much as digits as its factorization.

84548489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1474560, while the sum is 50.

The square root of 84548489 is about 9195.0252310692. The cubic root of 84548489 is about 438.9030682120.

The spelling of 84548489 in words is "eighty-four million, five hundred forty-eight thousand, four hundred eighty-nine".