806403853 has 2 divisors, whose sum is σ = 806403854. Its totient is φ = 806403852.

The previous prime is 806403839. The next prime is 806403877. The reversal of 806403853 is 358304608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 753667209 + 52736644 = 27453^2 + 7262^2 .

It is a cyclic number.

It is not a de Polignac number, because 806403853 - 2¹⁷ = 806272781 is a prime.

It is equal to p_41458861 and since 806403853 and 41458861 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (806403953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403201926 + 403201927.

It is an arithmetic number, because the mean of its divisors is an integer number (403201927).

Almost surely, 2^806403853 is an apocalyptic number.

It is an amenable number.

806403853 is a deficient number, since it is larger than the sum of its proper divisors (1).

806403853 is an equidigital number, since it uses as much as digits as its factorization.

806403853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 806403853 is about 28397.2508000334. The cubic root of 806403853 is about 930.7881910188.

The spelling of 806403853 in words is "eight hundred six million, four hundred three thousand, eight hundred fifty-three".