859455 has 24 divisors (see below), whose sum is σ = 1516320. Its totient is φ = 450240.

The previous prime is 859447. The next prime is 859459. The reversal of 859455 is 554958.

It is a happy number.

It is not a de Polignac number, because 859455 - 2³ = 859447 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (859459) 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 23 ways as a sum of consecutive naturals, for example, 3061 + ... + 3329.

It is an arithmetic number, because the mean of its divisors is an integer number (63180).

2⁸⁵⁹⁴⁵⁵ is an apocalyptic number.

859455 is a deficient number, since it is larger than the sum of its proper divisors (656865).

859455 is a wasteful number, since it uses less digits than its factorization.

859455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 348 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 859455 is about 927.0679586740. The cubic root of 859455 is about 95.0767615967.

It can be divided in two parts, 8594 and 55, that added together give a square (8649 = 93²).

The spelling of 859455 in words is "eight hundred fifty-nine thousand, four hundred fifty-five".