850169 has 4 divisors (see below), whose sum is σ = 860496. Its totient is φ = 839844.

The previous prime is 850147. The next prime is 850177. The reversal of 850169 is 961058.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-850169 is a prime.

It is a super-2 number, since 2×850169² = 1445574657122, which contains 22 as substring.

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

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (850139) 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 3 ways as a sum of consecutive naturals, for example, 5039 + ... + 5204.

It is an arithmetic number, because the mean of its divisors is an integer number (215124).

2⁸⁵⁰¹⁶⁹ is an apocalyptic number.

It is an amenable number.

850169 is a deficient number, since it is larger than the sum of its proper divisors (10327).

850169 is a wasteful number, since it uses less digits than its factorization.

850169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10326.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 850169 is about 922.0460942925. The cubic root of 850169 is about 94.7331012764.

Subtracting 850169 from its reverse (961058), we obtain a square (110889 = 333²).

The spelling of 850169 in words is "eight hundred fifty thousand, one hundred sixty-nine".