447345047 has 4 divisors (see below), whose sum is σ = 451449240. Its totient is φ = 443240856.

The previous prime is 447345043. The next prime is 447345049. The reversal of 447345047 is 740543744.

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

It is a cyclic number.

It is not a de Polignac number, because 447345047 - 2² = 447345043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 447345047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447345043) 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, 2051933 + ... + 2052150.

It is an arithmetic number, because the mean of its divisors is an integer number (112862310).

Almost surely, 2^447345047 is an apocalyptic number.

447345047 is a deficient number, since it is larger than the sum of its proper divisors (4104193).

447345047 is a wasteful number, since it uses less digits than its factorization.

447345047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4104192.

The product of its (nonzero) digits is 188160, while the sum is 38.

The square root of 447345047 is about 21150.5330192882. The cubic root of 447345047 is about 764.7994102929.

The spelling of 447345047 in words is "four hundred forty-seven million, three hundred forty-five thousand, forty-seven".