447288916 has 6 divisors (see below), whose sum is σ = 782755610. Its totient is φ = 223644456.

The previous prime is 447288883. The next prime is 447288929. The reversal of 447288916 is 619882744.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 260693316 + 186595600 = 16146^2 + 13660^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 447288916.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55911111 + ... + 55911118.

Almost surely, 2^447288916 is an apocalyptic number.

It is an amenable number.

447288916 is a deficient number, since it is larger than the sum of its proper divisors (335466694).

447288916 is a wasteful number, since it uses less digits than its factorization.

447288916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111822233 (or 111822231 counting only the distinct ones).

The product of its digits is 774144, while the sum is 49.

The square root of 447288916 is about 21149.2060371069. The cubic root of 447288916 is about 764.7674210028.

The spelling of 447288916 in words is "four hundred forty-seven million, two hundred eighty-eight thousand, nine hundred sixteen".