447420172 has 12 divisors (see below), whose sum is σ = 783467776. Its totient is φ = 223572240.

The previous prime is 447420157. The next prime is 447420209. The reversal of 447420172 is 271024744.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26979 + ... + 40282.

Almost surely, 2^447420172 is an apocalyptic number.

It is an amenable number.

447420172 is a deficient number, since it is larger than the sum of its proper divisors (336047604).

447420172 is a wasteful number, since it uses less digits than its factorization.

447420172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68928 (or 68926 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 31.

The square root of 447420172 is about 21152.3089047035. The cubic root of 447420172 is about 764.8422201553.

The spelling of 447420172 in words is "four hundred forty-seven million, four hundred twenty thousand, one hundred seventy-two".