447638 has 16 divisors (see below), whose sum is σ = 707616. Its totient is φ = 212160.

The previous prime is 447637. The next prime is 447641. The reversal of 447638 is 836744.

It is a happy number.

447638 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4295 + ... + 4397.

It is an arithmetic number, because the mean of its divisors is an integer number (44226).

2⁴⁴⁷⁶³⁸ is an apocalyptic number.

447638 is a deficient number, since it is larger than the sum of its proper divisors (259978).

447638 is a wasteful number, since it uses less digits than its factorization.

447638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199.

The product of its digits is 16128, while the sum is 32.

The square root of 447638 is about 669.0575461050. The cubic root of 447638 is about 76.4966322011.

The spelling of 447638 in words is "four hundred forty-seven thousand, six hundred thirty-eight".