447445147 has 4 divisors (see below), whose sum is σ = 462874320. Its totient is φ = 432015976.

The previous prime is 447445129. The next prime is 447445153. The reversal of 447445147 is 741544744.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-447445147 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (447445127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7714543 + ... + 7714600.

It is an arithmetic number, because the mean of its divisors is an integer number (115718580).

Almost surely, 2^447445147 is an apocalyptic number.

447445147 is a deficient number, since it is larger than the sum of its proper divisors (15429173).

447445147 is a wasteful number, since it uses less digits than its factorization.

447445147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15429172.

The product of its digits is 250880, while the sum is 40.

The square root of 447445147 is about 21152.8992575486. The cubic root of 447445147 is about 764.8564510581.

The spelling of 447445147 in words is "four hundred forty-seven million, four hundred forty-five thousand, one hundred forty-seven".