859087 has 4 divisors (see below), whose sum is σ = 861840. Its totient is φ = 856336.

The previous prime is 859081. The next prime is 859091. The reversal of 859087 is 780958.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 780958 = 2 ⋅390479.

It is a cyclic number.

It is not a de Polignac number, because 859087 - 2¹¹ = 857039 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 (859081) 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, 838 + ... + 1555.

It is an arithmetic number, because the mean of its divisors is an integer number (215460).

2⁸⁵⁹⁰⁸⁷ is an apocalyptic number.

859087 is a deficient number, since it is larger than the sum of its proper divisors (2753).

859087 is a wasteful number, since it uses less digits than its factorization.

859087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 859087 is about 926.8694622222. The cubic root of 859087 is about 95.0631897233.

It can be divided in two parts, 8 and 59087, that added together give a palindrome (59095).

The spelling of 859087 in words is "eight hundred fifty-nine thousand, eighty-seven".