859955 has 8 divisors (see below), whose sum is σ = 1037232. Its totient is φ = 684448.

The previous prime is 859939. The next prime is 859973. The reversal of 859955 is 559958.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 859955 - 2⁴ = 859939 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1172 + ... + 1758.

It is an arithmetic number, because the mean of its divisors is an integer number (129654).

2⁸⁵⁹⁹⁵⁵ is an apocalyptic number.

859955 is a deficient number, since it is larger than the sum of its proper divisors (177277).

859955 is a wasteful number, since it uses less digits than its factorization.

859955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885.

The product of its digits is 81000, while the sum is 41.

The square root of 859955 is about 927.3375868582. The cubic root of 859955 is about 95.0951954356.

The spelling of 859955 in words is "eight hundred fifty-nine thousand, nine hundred fifty-five".