859822 has 4 divisors (see below), whose sum is σ = 1289736. Its totient is φ = 429910.

The previous prime is 859801. The next prime is 859823. The reversal of 859822 is 228958.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 228958 = 2 ⋅114479.

It is a d-powerful number, because it can be written as 8² + 5³ + 8³ + 9⁶ + 2¹⁶ + 2¹⁸ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (859823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214954 + ... + 214957.

It is an arithmetic number, because the mean of its divisors is an integer number (322434).

2⁸⁵⁹⁸²² is an apocalyptic number.

859822 is a deficient number, since it is larger than the sum of its proper divisors (429914).

859822 is a wasteful number, since it uses less digits than its factorization.

859822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429913.

The product of its digits is 11520, while the sum is 34.

The square root of 859822 is about 927.2658734150. The cubic root of 859822 is about 95.0902927321.

It can be divided in two parts, 859 and 822, that added together give a square (1681 = 41²).

The spelling of 859822 in words is "eight hundred fifty-nine thousand, eight hundred twenty-two".