84448489 has 2 divisors, whose sum is σ = 84448490. Its totient is φ = 84448488.

The previous prime is 84448487. The next prime is 84448589. The reversal of 84448489 is 98484448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68608089 + 15840400 = 8283^2 + 3980^2 .

It is a cyclic number.

It is not a de Polignac number, because 84448489 - 2¹ = 84448487 is a prime.

Together with 84448487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (84448487) 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, 42224244 + 42224245.

It is an arithmetic number, because the mean of its divisors is an integer number (42224245).

Almost surely, 2^84448489 is an apocalyptic number.

It is an amenable number.

84448489 is a deficient number, since it is larger than the sum of its proper divisors (1).

84448489 is an equidigital number, since it uses as much as digits as its factorization.

84448489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1179648, while the sum is 49.

The square root of 84448489 is about 9189.5858992666. The cubic root of 84448489 is about 438.7299619369.

The spelling of 84448489 in words is "eighty-four million, four hundred forty-eight thousand, four hundred eighty-nine".