447438 has 8 divisors (see below), whose sum is σ = 894888. Its totient is φ = 149144.

The previous prime is 447427. The next prime is 447439. The reversal of 447438 is 834744.

It is a sphenic number, since it is the product of 3 distinct primes.

447438 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37281 + ... + 37292.

It is an arithmetic number, because the mean of its divisors is an integer number (111861).

2⁴⁴⁷⁴³⁸ is an apocalyptic number.

447438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

447438 is a wasteful number, since it uses less digits than its factorization.

447438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74578.

The product of its digits is 10752, while the sum is 30.

The square root of 447438 is about 668.9080654320. The cubic root of 447438 is about 76.4852378709.

The spelling of 447438 in words is "four hundred forty-seven thousand, four hundred thirty-eight".