487869 has 4 divisors (see below), whose sum is σ = 650496. Its totient is φ = 325244.

The previous prime is 487843. The next prime is 487873. The reversal of 487869 is 968784.

It is a happy number.

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 487869 - 2⁷ = 487741 is a prime.

It is a super-2 number, since 2×487869² = 476032322322, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 487869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81309 + ... + 81314.

It is an arithmetic number, because the mean of its divisors is an integer number (162624).

2⁴⁸⁷⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

487869 is a deficient number, since it is larger than the sum of its proper divisors (162627).

487869 is a wasteful number, since it uses less digits than its factorization.

487869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162626.

The product of its digits is 96768, while the sum is 42.

The square root of 487869 is about 698.4761985923. The cubic root of 487869 is about 78.7228982074.

The spelling of 487869 in words is "four hundred eighty-seven thousand, eight hundred sixty-nine".