• 486 can be written using four 4's:
486 has 12 divisors (see below), whose sum is σ = 1092. Its totient is φ = 162.
The previous prime is 479. The next prime is 487. The reversal of 486 is 684.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is the 22-nd Perrin number.
It is a plaindrome in base 12, base 14 and base 15.
It is a nialpdrome in base 3 and base 9.
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 486.
It is not an unprimeable number, because it can be changed into a prime (487) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 161 + 162 + 163.
It is an arithmetic number, because the mean of its divisors is an integer number (91).
It is a practical number, because each smaller number is the sum of distinct divisors of 486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (546).
486 is an abundant number, since it is smaller than the sum of its proper divisors (606).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
486 is an equidigital number, since it uses as much as digits as its factorization.
486 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 17 (or 5 counting only the distinct ones).
The product of its digits is 192, while the sum is 18.
The square root of 486 is about 22.0454076850. The cubic root of 486 is about 7.8622241826.
486 divided by its sum of digits (18) gives a cube (27 = 33).
The spelling of 486 in words is "four hundred eighty-six", and thus it is an aban number.
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