448538779 has 4 divisors (see below), whose sum is σ = 483041776. Its totient is φ = 414035784.

The previous prime is 448538777. The next prime is 448538789. The reversal of 448538779 is 977835844.

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

It is a cyclic number.

It is not a de Polignac number, because 448538779 - 2¹ = 448538777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (448538773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17251479 + ... + 17251504.

It is an arithmetic number, because the mean of its divisors is an integer number (120760444).

Almost surely, 2^448538779 is an apocalyptic number.

448538779 is a deficient number, since it is larger than the sum of its proper divisors (34502997).

448538779 is a wasteful number, since it uses less digits than its factorization.

448538779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34502996.

The product of its digits is 6773760, while the sum is 55.

The square root of 448538779 is about 21178.7341217552. The cubic root of 448538779 is about 765.4790904490.

It can be divided in two parts, 4485 and 38779, that added together give a square (43264 = 208²).

The spelling of 448538779 in words is "four hundred forty-eight million, five hundred thirty-eight thousand, seven hundred seventy-nine".