850 has 12 divisors (see below), whose sum is σ = 1674. Its totient is φ = 320.

The previous prime is 839. The next prime is 853. The reversal of 850 is 58.

850 is nontrivially palindromic in base 13.

850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

850 is an esthetic number in base 7, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 3 ways, for example, as 729 + 121 = 27^2 + 11^2 .

It is an alternating number because its digits alternate between even and odd.

850 is an undulating number in base 7 and base 13.

It is a plaindrome in base 9, base 12 and base 14.

It is a nialpdrome in base 10.

It is a zygodrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 850.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42 + ... + 58.

2⁸⁵⁰ is an apocalyptic number.

850 is a deficient number, since it is larger than the sum of its proper divisors (824).

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

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

The sum of its prime factors is 29 (or 24 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 850 is about 29.1547594742. The cubic root of 850 is about 9.4726823719.

It can be divided in two parts, 8 and 50, that multiplied together give a square (400 = 20²).

The spelling of 850 in words is "eight hundred fifty", and thus it is an aban number and an oban number.