Search a number
-
+
487009 = 3671327
BaseRepresentation
bin1110110111001100001
3220202001101
41312321201
5111041014
614234401
74065565
oct1667141
9822041
10487009
11302996
121b5a01
13140893
14c96a5
1599474
hex76e61

487009 has 4 divisors (see below), whose sum is σ = 488704. Its totient is φ = 485316.

The previous prime is 487007. The next prime is 487013. The reversal of 487009 is 900784.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 487009 - 21 = 487007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (487007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297 + ... + 1030.

It is an arithmetic number, because the mean of its divisors is an integer number (122176).

2487009 is an apocalyptic number.

It is an amenable number.

487009 is a deficient number, since it is larger than the sum of its proper divisors (1695).

487009 is a wasteful number, since it uses less digits than its factorization.

487009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 487009 is about 697.8603012065. The cubic root of 487009 is about 78.6766142580.

The spelling of 487009 in words is "four hundred eighty-seven thousand, nine".

Divisors: 1 367 1327 487009