859487 has 4 divisors (see below), whose sum is σ = 896880. Its totient is φ = 822096.

The previous prime is 859477. The next prime is 859493. The reversal of 859487 is 784958.

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

It is a cyclic number.

It is not a de Polignac number, because 859487 - 2⁶ = 859423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (859447) 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, 18662 + ... + 18707.

It is an arithmetic number, because the mean of its divisors is an integer number (224220).

2⁸⁵⁹⁴⁸⁷ is an apocalyptic number.

859487 is a deficient number, since it is larger than the sum of its proper divisors (37393).

859487 is a wasteful number, since it uses less digits than its factorization.

859487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37392.

The product of its digits is 80640, while the sum is 41.

The square root of 859487 is about 927.0852172266. The cubic root of 859487 is about 95.0779415765.

Subtracting from 859487 its reverse (784958), we obtain a square (74529 = 273²).

It can be divided in two parts, 8 and 59487, that added together give a palindrome (59495).

The spelling of 859487 in words is "eight hundred fifty-nine thousand, four hundred eighty-seven".