448741921 has 2 divisors, whose sum is σ = 448741922. Its totient is φ = 448741920.

The previous prime is 448741919. The next prime is 448741933. The reversal of 448741921 is 129147844.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 393030625 + 55711296 = 19825^2 + 7464^2 .

It is a cyclic number.

It is not a de Polignac number, because 448741921 - 2¹ = 448741919 is a prime.

Together with 448741919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (448741961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224370960 + 224370961.

It is an arithmetic number, because the mean of its divisors is an integer number (224370961).

Almost surely, 2^448741921 is an apocalyptic number.

It is an amenable number.

448741921 is a deficient number, since it is larger than the sum of its proper divisors (1).

448741921 is an equidigital number, since it uses as much as digits as its factorization.

448741921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 40.

The square root of 448741921 is about 21183.5294745706. The cubic root of 448741921 is about 765.5946341443.

The spelling of 448741921 in words is "four hundred forty-eight million, seven hundred forty-one thousand, nine hundred twenty-one".