448218394 has 16 divisors (see below), whose sum is σ = 733966632. Its totient is φ = 204035328.

The previous prime is 448218383. The next prime is 448218431. The reversal of 448218394 is 493812844.

It can be written as a sum of positive squares in 4 ways, for example, as 280127169 + 168091225 = 16737^2 + 12965^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 448218394.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116179 + ... + 119974.

Almost surely, 2^448218394 is an apocalyptic number.

448218394 is a deficient number, since it is larger than the sum of its proper divisors (285748238).

448218394 is a wasteful number, since it uses less digits than its factorization.

448218394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236241.

The product of its digits is 221184, while the sum is 43.

The square root of 448218394 is about 21171.1689332450. The cubic root of 448218394 is about 765.2967900211.

The spelling of 448218394 in words is "four hundred forty-eight million, two hundred eighteen thousand, three hundred ninety-four".