447908816 has 10 divisors (see below), whose sum is σ = 867823362. Its totient is φ = 223954400.

The previous prime is 447908779. The next prime is 447908819. The reversal of 447908816 is 618809744.

It can be written as a sum of positive squares in only one way, i.e., 447745600 + 163216 = 21160^2 + 404^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447908819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13997135 + ... + 13997166.

Almost surely, 2^447908816 is an apocalyptic number.

It is an amenable number.

447908816 is a deficient number, since it is larger than the sum of its proper divisors (419914546).

447908816 is a wasteful number, since it uses less digits than its factorization.

447908816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27994309 (or 27994303 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 447908816 is about 21163.8563593689. The cubic root of 447908816 is about 765.1205562779.

The spelling of 447908816 in words is "four hundred forty-seven million, nine hundred eight thousand, eight hundred sixteen".