806403841 has 4 divisors (see below), whose sum is σ = 834210900. Its totient is φ = 778596784.

The previous prime is 806403839. The next prime is 806403853. The reversal of 806403841 is 148304608.

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 689850225 + 116553616 = 26265^2 + 10796^2 .

It is a cyclic number.

It is not a de Polignac number, because 806403841 - 2¹ = 806403839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 806403797 and 806403806.

It is not an unprimeable number, because it can be changed into a prime (806400841) 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 3 ways as a sum of consecutive naturals, for example, 13903486 + ... + 13903543.

It is an arithmetic number, because the mean of its divisors is an integer number (208552725).

Almost surely, 2^806403841 is an apocalyptic number.

It is an amenable number.

806403841 is a deficient number, since it is larger than the sum of its proper divisors (27807059).

806403841 is a wasteful number, since it uses less digits than its factorization.

806403841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27807058.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 806403841 is about 28397.2505887454. The cubic root of 806403841 is about 930.7881864018.

The spelling of 806403841 in words is "eight hundred six million, four hundred three thousand, eight hundred forty-one".