849856 has 42 divisors (see below), whose sum is σ = 1969008. Its totient is φ = 362880.

The previous prime is 849839. The next prime is 849857. The reversal of 849856 is 658948.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849857) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 3001 + ... + 3271.

2⁸⁴⁹⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 849856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (984504).

849856 is an abundant number, since it is smaller than the sum of its proper divisors (1119152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

849856 is a wasteful number, since it uses less digits than its factorization.

849856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 280 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 849856 is about 921.8763474566. The cubic root of 849856 is about 94.7214741370.

The spelling of 849856 in words is "eight hundred forty-nine thousand, eight hundred fifty-six".