448791321 has 16 divisors (see below), whose sum is σ = 653296320. Its totient is φ = 271782720.

The previous prime is 448791293. The next prime is 448791359. The reversal of 448791321 is 123197844.

It is not a de Polignac number, because 448791321 - 2⁶ = 448791257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 448791321.

It is not an unprimeable number, because it can be changed into a prime (448791221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44715 + ... + 53823.

It is an arithmetic number, because the mean of its divisors is an integer number (40831020).

Almost surely, 2^448791321 is an apocalyptic number.

It is an amenable number.

448791321 is a deficient number, since it is larger than the sum of its proper divisors (204504999).

448791321 is a wasteful number, since it uses less digits than its factorization.

448791321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10616.

The product of its digits is 48384, while the sum is 39.

The square root of 448791321 is about 21184.6954427011. The cubic root of 448791321 is about 765.6227267482.

The spelling of 448791321 in words is "four hundred forty-eight million, seven hundred ninety-one thousand, three hundred twenty-one".