819846 has 24 divisors (see below), whose sum is σ = 1825824. Its totient is φ = 265680.

The previous prime is 819829. The next prime is 819853. The reversal of 819846 is 648918.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 819846.

It is a congruent number.

It is an unprimeable number.

819846 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51 + ... + 1281.

It is an arithmetic number, because the mean of its divisors is an integer number (76076).

2⁸¹⁹⁸⁴⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 819846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (912912).

819846 is an abundant number, since it is smaller than the sum of its proper divisors (1005978).

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

819846 is a wasteful number, since it uses less digits than its factorization.

819846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276 (or 1273 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 819846 is about 905.4534775459. The cubic root of 819846 is about 93.5931564140.

The spelling of 819846 in words is "eight hundred nineteen thousand, eight hundred forty-six".