447215 has 4 divisors (see below), whose sum is σ = 536664. Its totient is φ = 357768.

The previous prime is 447211. The next prime is 447217. The reversal of 447215 is 512744.

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 447215 - 2² = 447211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44717 + ... + 44726.

It is an arithmetic number, because the mean of its divisors is an integer number (134166).

2⁴⁴⁷²¹⁵ is an apocalyptic number.

447215 is a deficient number, since it is larger than the sum of its proper divisors (89449).

447215 is an equidigital number, since it uses as much as digits as its factorization.

447215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89448.

The product of its digits is 1120, while the sum is 23.

The square root of 447215 is about 668.7413550843. The cubic root of 447215 is about 76.4725291885.

Adding to 447215 its reverse (512744), we get a palindrome (959959).

The spelling of 447215 in words is "four hundred forty-seven thousand, two hundred fifteen".