806444 has 6 divisors (see below), whose sum is σ = 1411284. Its totient is φ = 403220.

The previous prime is 806389. The next prime is 806447. The reversal of 806444 is 444608.

It is not an unprimeable number, because it can be changed into a prime (806447) by changing a digit.

806444 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100802 + ... + 100809.

It is an arithmetic number, because the mean of its divisors is an integer number (235214).

2⁸⁰⁶⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

806444 is a deficient number, since it is larger than the sum of its proper divisors (604840).

806444 is a wasteful number, since it uses less digits than its factorization.

806444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201615 (or 201613 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 806444 is about 898.0222714387. The cubic root of 806444 is about 93.0803637263.

The spelling of 806444 in words is "eight hundred six thousand, four hundred forty-four".