809841313 has 4 divisors (see below), whose sum is σ = 852464560. Its totient is φ = 767218068.

The previous prime is 809841301. The next prime is 809841353. The reversal of 809841313 is 313148908.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 809841313 - 2¹⁷ = 809710241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (809841353) 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, 21311595 + ... + 21311632.

It is an arithmetic number, because the mean of its divisors is an integer number (213116140).

Almost surely, 2^809841313 is an apocalyptic number.

It is an amenable number.

809841313 is a deficient number, since it is larger than the sum of its proper divisors (42623247).

809841313 is a wasteful number, since it uses less digits than its factorization.

809841313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42623246.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 809841313 is about 28457.7109585434. The cubic root of 809841313 is about 932.1088740568.

The spelling of 809841313 in words is "eight hundred nine million, eight hundred forty-one thousand, three hundred thirteen".