487 has 2 divisors, whose sum is σ = 488. Its totient is φ = 486.

The previous prime is 479. The next prime is 491. The reversal of 487 is 784.

It can be divided in two parts, 48 and 7, that added together give a palindrome (55).

It is a happy number.

487 is nontrivially palindromic in base 8.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 487 - 2^{3} = 479 is a prime.

It is a Chen prime.

487 is an undulating number in base 8.

487 is a lucky number.

It is a plaindrome in base 12, base 14 and base 15.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a Pierpont prime, being equal to 2^{1} ⋅ 3^{5} + 1.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243 + 244.

It is an arithmetic number, because the mean of its divisors is an integer number (244).

487 is a deficient number, since it is larger than the sum of its proper divisors (1).

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

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

The product of its digits is 224, while the sum is 19.

The square root of 487 is about 22.0680764907. The cubic root of 487 is about 7.8676129603.

The spelling of 487 in words is "four hundred eighty-seven", and thus it is an aban number.

• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.116 sec. • engine limits •