447221994 has 16 divisors (see below), whose sum is σ = 895263840. Its totient is φ = 148937360.

The previous prime is 447221989. The next prime is 447222037. The reversal of 447221994 is 499122744.

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, 26952 + ... + 40259.

It is an arithmetic number, because the mean of its divisors is an integer number (55953990).

Almost surely, 2^447221994 is an apocalyptic number.

447221994 is an abundant number, since it is smaller than the sum of its proper divisors (448041846).

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

447221994 is a wasteful number, since it uses less digits than its factorization.

447221994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68325.

The product of its digits is 145152, while the sum is 42.

The square root of 447221994 is about 21147.6238381526. The cubic root of 447221994 is about 764.7292783795.

The spelling of 447221994 in words is "four hundred forty-seven million, two hundred twenty-one thousand, nine hundred ninety-four".