201447 has 12 divisors (see below), whose sum is σ = 302120. Its totient is φ = 134136.

The previous prime is 201437. The next prime is 201449. The reversal of 201447 is 744102.

It is a happy number.

It is not a de Polignac number, because 201447 - 2¹¹ = 199399 is a prime.

It is a Duffinian number.

201447 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 201447.

It is not an unprimeable number, because it can be changed into a prime (201449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172 + ... + 657.

2²⁰¹⁴⁴⁷ is an apocalyptic number.

201447 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

201447 is a deficient number, since it is larger than the sum of its proper divisors (100673).

201447 is an frugal number, since it uses more digits than its factorization.

201447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844 (or 832 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 201447 is about 448.8284750325. The cubic root of 201447 is about 58.6210511174.

Adding to 201447 its reverse (744102), we get a palindrome (945549).

The spelling of 201447 in words is "two hundred one thousand, four hundred forty-seven", and thus it is an iban number.