449293218 has 16 divisors (see below), whose sum is σ = 980276256. Its totient is φ = 136149440.

The previous prime is 449293213. The next prime is 449293231. The reversal of 449293218 is 812392944.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 449293218.

It is not an unprimeable number, because it can be changed into a prime (449293213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3403671 + ... + 3403802.

It is an arithmetic number, because the mean of its divisors is an integer number (61267266).

Almost surely, 2^449293218 is an apocalyptic number.

449293218 is an abundant number, since it is smaller than the sum of its proper divisors (530983038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

449293218 is a wasteful number, since it uses less digits than its factorization.

449293218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6807489.

The product of its digits is 124416, while the sum is 42.

The square root of 449293218 is about 21196.5378776818. The cubic root of 449293218 is about 765.9080268242.

The spelling of 449293218 in words is "four hundred forty-nine million, two hundred ninety-three thousand, two hundred eighteen".