448513789 has 2 divisors, whose sum is σ = 448513790. Its totient is φ = 448513788.

The previous prime is 448513787. The next prime is 448513841. The reversal of 448513789 is 987315844.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 432848025 + 15665764 = 20805^2 + 3958^2 .

It is a cyclic number.

It is not a de Polignac number, because 448513789 - 2¹ = 448513787 is a prime.

Together with 448513787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (448513781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224256894 + 224256895.

It is an arithmetic number, because the mean of its divisors is an integer number (224256895).

Almost surely, 2^448513789 is an apocalyptic number.

It is an amenable number.

448513789 is a deficient number, since it is larger than the sum of its proper divisors (1).

448513789 is an equidigital number, since it uses as much as digits as its factorization.

448513789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 49.

The square root of 448513789 is about 21178.1441349331. The cubic root of 448513789 is about 765.4648741548.

The spelling of 448513789 in words is "four hundred forty-eight million, five hundred thirteen thousand, seven hundred eighty-nine".