487849 has 4 divisors (see below), whose sum is σ = 516564. Its totient is φ = 459136.

The previous prime is 487843. The next prime is 487873. The reversal of 487849 is 948784.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 196249 + 291600 = 443^2 + 540^2 .

It is a de Polignac number, because none of the positive numbers 2^k-487849 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (487843) 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, 14332 + ... + 14365.

It is an arithmetic number, because the mean of its divisors is an integer number (129141).

2⁴⁸⁷⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

487849 is a deficient number, since it is larger than the sum of its proper divisors (28715).

487849 is a wasteful number, since it uses less digits than its factorization.

487849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28714.

The product of its digits is 64512, while the sum is 40.

The square root of 487849 is about 698.4618815655. The cubic root of 487849 is about 78.7218224545.

The spelling of 487849 in words is "four hundred eighty-seven thousand, eight hundred forty-nine".