448891589 has 4 divisors (see below), whose sum is σ = 449005356. Its totient is φ = 448777824.

The previous prime is 448891567. The next prime is 448891591. The reversal of 448891589 is 985198844.

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 138532900 + 310358689 = 11770^2 + 17617^2 .

It is a cyclic number.

It is not a de Polignac number, because 448891589 - 2²⁰ = 447843013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448891889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50744 + ... + 58929.

It is an arithmetic number, because the mean of its divisors is an integer number (112251339).

Almost surely, 2^448891589 is an apocalyptic number.

It is an amenable number.

448891589 is a deficient number, since it is larger than the sum of its proper divisors (113767).

448891589 is a wasteful number, since it uses less digits than its factorization.

448891589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113766.

The product of its digits is 3317760, while the sum is 56.

The square root of 448891589 is about 21187.0618302775. The cubic root of 448891589 is about 765.6797404348.

The spelling of 448891589 in words is "four hundred forty-eight million, eight hundred ninety-one thousand, five hundred eighty-nine".