1000008909 has 12 divisors (see below), whose sum is σ = 1497956096. Its totient is φ = 666672444.

The previous prime is 1000008899. The next prime is 1000008917. The reversal of 1000008909 is 9098000001.

It is not a de Polignac number, because 1000008909 - 2⁹ = 1000008397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000008109) 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, 2057389 + ... + 2057874.

Almost surely, 2^1000008909 is an apocalyptic number.

It is an amenable number.

1000008909 is a deficient number, since it is larger than the sum of its proper divisors (497947187).

1000008909 is an frugal number, since it uses more digits than its factorization.

1000008909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4115278 (or 4115266 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 1000008909 is about 31622.9174650284. The cubic root of 1000008909 is about 1000.0029696578.

The spelling of 1000008909 in words is "one billion, eight thousand, nine hundred nine".