448488389 has 2 divisors, whose sum is σ = 448488390. Its totient is φ = 448488388.

The previous prime is 448488347. The next prime is 448488449. The reversal of 448488389 is 983884844.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435056164 + 13432225 = 20858^2 + 3665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-448488389 is a prime.

It is a super-2 number, since 2×448488389² = 402283670135630642, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (448488319) 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, 224244194 + 224244195.

It is an arithmetic number, because the mean of its divisors is an integer number (224244195).

Almost surely, 2^448488389 is an apocalyptic number.

It is an amenable number.

448488389 is a deficient number, since it is larger than the sum of its proper divisors (1).

448488389 is an equidigital number, since it uses as much as digits as its factorization.

448488389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7077888, while the sum is 56.

The square root of 448488389 is about 21177.5444516119. The cubic root of 448488389 is about 765.4504240789.

The spelling of 448488389 in words is "four hundred forty-eight million, four hundred eighty-eight thousand, three hundred eighty-nine".