448933813 has 4 divisors (see below), whose sum is σ = 449444268. Its totient is φ = 448423360.

The previous prime is 448933811. The next prime is 448933819. The reversal of 448933813 is 318339844.

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 169442289 + 279491524 = 13017^2 + 16718^2 .

It is a cyclic number.

It is not a de Polignac number, because 448933813 - 2¹ = 448933811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 448933813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448933811) 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, 253906 + ... + 255667.

It is an arithmetic number, because the mean of its divisors is an integer number (112361067).

Almost surely, 2^448933813 is an apocalyptic number.

It is an amenable number.

448933813 is a deficient number, since it is larger than the sum of its proper divisors (510455).

448933813 is an equidigital number, since it uses as much as digits as its factorization.

448933813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510454.

The product of its digits is 248832, while the sum is 43.

The square root of 448933813 is about 21188.0582640317. The cubic root of 448933813 is about 765.7037470090.

The spelling of 448933813 in words is "four hundred forty-eight million, nine hundred thirty-three thousand, eight hundred thirteen".