447405222 has 64 divisors (see below), whose sum is σ = 996323328. Its totient is φ = 132804000.

The previous prime is 447405209. The next prime is 447405253. The reversal of 447405222 is 222504744.

It is a Smith number, since the sum of its digits (30) 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 447405222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1438447 + ... + 1438757.

It is an arithmetic number, because the mean of its divisors is an integer number (15567552).

Almost surely, 2^447405222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 447405222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (498161664).

447405222 is an abundant number, since it is smaller than the sum of its proper divisors (548918106).

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

447405222 is a wasteful number, since it uses less digits than its factorization.

447405222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705.

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 447405222 is about 21151.9555124343. The cubic root of 447405222 is about 764.8337013034.

Adding to 447405222 its reverse (222504744), we get a palindrome (669909966).

The spelling of 447405222 in words is "four hundred forty-seven million, four hundred five thousand, two hundred twenty-two".