448644961 has 4 divisors (see below), whose sum is σ = 448706052. Its totient is φ = 448583872.

The previous prime is 448644941. The next prime is 448644991. The reversal of 448644961 is 169446844.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 405821025 + 42823936 = 20145^2 + 6544^2 .

It is a cyclic number.

It is not a de Polignac number, because 448644961 - 2²⁷ = 314427233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (448644941) 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 in 3 ways as a sum of consecutive naturals, for example, 17740 + ... + 34813.

It is an arithmetic number, because the mean of its divisors is an integer number (112176513).

It is a 7344-hyperperfect number.

Almost surely, 2^448644961 is an apocalyptic number.

It is an amenable number.

448644961 is a deficient number, since it is larger than the sum of its proper divisors (61091).

448644961 is an equidigital number, since it uses as much as digits as its factorization.

448644961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61090.

The product of its digits is 663552, while the sum is 46.

The square root of 448644961 is about 21181.2407804642. The cubic root of 448644961 is about 765.5394893054.

It can be divided in two parts, 4486449 and 61, that added together give a triangular number (4486510 = T₂₉₉₅).

The spelling of 448644961 in words is "four hundred forty-eight million, six hundred forty-four thousand, nine hundred sixty-one".