811086909 has 8 divisors (see below), whose sum is σ = 1084304160. Its totient is φ = 539297136.

The previous prime is 811086869. The next prime is 811086961. The reversal of 811086909 is 909680118.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 811086909 - 2⁷ = 811086781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811086109) 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 7 ways as a sum of consecutive naturals, for example, 355542 + ... + 357815.

It is an arithmetic number, because the mean of its divisors is an integer number (135538020).

Almost surely, 2^811086909 is an apocalyptic number.

It is an amenable number.

811086909 is a deficient number, since it is larger than the sum of its proper divisors (273217251).

811086909 is a wasteful number, since it uses less digits than its factorization.

811086909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713739.

The product of its (nonzero) digits is 31104, while the sum is 42.

The square root of 811086909 is about 28479.5875847948. The cubic root of 811086909 is about 932.5865134511.

The spelling of 811086909 in words is "eight hundred eleven million, eighty-six thousand, nine hundred nine".