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447 = 3149
BaseRepresentation
bin110111111
3121120
412333
53242
62023
71206
oct677
9546
10447
11377
12313
13285
1423d
151ec
hex1bf

447 has 4 divisors (see below), whose sum is σ = 600. Its totient is φ = 296.

The previous prime is 443. The next prime is 449. The reversal of 447 is 744.

447 is nontrivially palindromic in base 12.

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 447 - 22 = 443 is a prime.

It is a D-number.

447 is an undulating number in base 12.

It is a plaindrome in base 4, base 8, base 10, base 11, base 14 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (443) 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, 72 + ... + 77.

It is an arithmetic number, because the mean of its divisors is an integer number (150).

447 is a deficient number, since it is larger than the sum of its proper divisors (153).

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

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

The sum of its prime factors is 152.

The product of its digits is 112, while the sum is 15.

The square root of 447 is about 21.1423745119. The cubic root of 447 is about 7.6460272422.

The spelling of 447 in words is "four hundred forty-seven", and thus it is an aban number and an iban number.

Divisors: 1 3 149 447