858854 has 4 divisors (see below), whose sum is σ = 1288284. Its totient is φ = 429426.

The previous prime is 858841. The next prime is 858859. The reversal of 858854 is 458858.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858859) by changing a digit.

858854 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 214712 + ... + 214715.

It is an arithmetic number, because the mean of its divisors is an integer number (322071).

2⁸⁵⁸⁸⁵⁴ is an apocalyptic number.

858854 is a deficient number, since it is larger than the sum of its proper divisors (429430).

858854 is a wasteful number, since it uses less digits than its factorization.

858854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429429.

The product of its digits is 51200, while the sum is 38.

The square root of 858854 is about 926.7437617810. The cubic root of 858854 is about 95.0545946583.

The spelling of 858854 in words is "eight hundred fifty-eight thousand, eight hundred fifty-four".