801000109 has 12 divisors (see below), whose sum is σ = 1003451484. Its totient is φ = 633757824.

The previous prime is 801000071. The next prime is 801000113. The reversal of 801000109 is 901000108.

It can be written as a sum of positive squares in 2 ways, for example, as 51883209 + 749116900 = 7203^2 + 27370^2 .

It is not a de Polignac number, because 801000109 - 2¹⁷ = 800869037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801000709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 628092 + ... + 629365.

It is an arithmetic number, because the mean of its divisors is an integer number (83620957).

Almost surely, 2^801000109 is an apocalyptic number.

It is an amenable number.

801000109 is a deficient number, since it is larger than the sum of its proper divisors (202451375).

801000109 is a wasteful number, since it uses less digits than its factorization.

801000109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257484 (or 1257477 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 801000109 is about 28301.9453218326. The cubic root of 801000109 is about 928.7044468636.

Subtracting 801000109 from its reverse (901000108), we obtain a palindrome (99999999).

The spelling of 801000109 in words is "eight hundred one million, one hundred nine", and thus it is an aban number.