806441 has 4 divisors (see below), whose sum is σ = 809172. Its totient is φ = 803712.

The previous prime is 806389. The next prime is 806447. The reversal of 806441 is 144608.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92416 + 714025 = 304^2 + 845^2 .

It is a cyclic number.

It is not a de Polignac number, because 806441 - 2¹⁴ = 790057 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 860 + ... + 1533.

It is an arithmetic number, because the mean of its divisors is an integer number (202293).

2⁸⁰⁶⁴⁴¹ is an apocalyptic number.

It is an amenable number.

806441 is a deficient number, since it is larger than the sum of its proper divisors (2731).

806441 is a wasteful number, since it uses less digits than its factorization.

806441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2730.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 806441 is about 898.0206011000. The cubic root of 806441 is about 93.0802483055.

The spelling of 806441 in words is "eight hundred six thousand, four hundred forty-one".