447491718 has 24 divisors (see below), whose sum is σ = 972675288. Its totient is φ = 148685472.

The previous prime is 447491701. The next prime is 447491719. The reversal of 447491718 is 817194744.

It is a happy number.

447491718 is a `hidden beast` number, since 4 + 474 + 9 + 171 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447491719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34080 + ... + 45347.

It is an arithmetic number, because the mean of its divisors is an integer number (40528137).

Almost surely, 2^447491718 is an apocalyptic number.

447491718 is an abundant number, since it is smaller than the sum of its proper divisors (525183570).

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

447491718 is a wasteful number, since it uses less digits than its factorization.

447491718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79748 (or 79745 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 447491718 is about 21154.0000472724. Note that the first 4 decimals coincide. The cubic root of 447491718 is about 764.8829860754.

The spelling of 447491718 in words is "four hundred forty-seven million, four hundred ninety-one thousand, seven hundred eighteen".