447840472 has 8 divisors (see below), whose sum is σ = 839700900. Its totient is φ = 223920232.

The previous prime is 447840461. The next prime is 447840511. The reversal of 447840472 is 274048744.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×447840472² = 401122176722365568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27990022 + ... + 27990037.

Almost surely, 2^447840472 is an apocalyptic number.

It is an amenable number.

447840472 is a deficient number, since it is larger than the sum of its proper divisors (391860428).

447840472 is a wasteful number, since it uses less digits than its factorization.

447840472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55980065 (or 55980061 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 40.

The square root of 447840472 is about 21162.2416581987. The cubic root of 447840472 is about 765.0816390866.

The spelling of 447840472 in words is "four hundred forty-seven million, eight hundred forty thousand, four hundred seventy-two".