808109459 has 4 divisors (see below), whose sum is σ = 808391304. Its totient is φ = 807827616.

The previous prime is 808109453. The next prime is 808109521. The reversal of 808109459 is 954901808.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-808109459 is a prime.

It is a super-3 number, since 3×808109459³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (808109453) 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 in 3 ways as a sum of consecutive naturals, for example, 136577 + ... + 142370.

It is an arithmetic number, because the mean of its divisors is an integer number (202097826).

Almost surely, 2^808109459 is an apocalyptic number.

808109459 is a deficient number, since it is larger than the sum of its proper divisors (281845).

808109459 is a wasteful number, since it uses less digits than its factorization.

808109459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281844.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 808109459 is about 28427.2661189922. The cubic root of 808109459 is about 931.4439583749.

The spelling of 808109459 in words is "eight hundred eight million, one hundred nine thousand, four hundred fifty-nine".