1000006009 has 4 divisors (see below), whose sum is σ = 1000532304. Its totient is φ = 999479716.

The previous prime is 1000005997. The next prime is 1000006019. The reversal of 1000006009 is 9006000001.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9006000001 = 77719 ⋅115879.

It is a cyclic number.

It is not a de Polignac number, because 1000006009 - 2²⁷ = 865788281 is a prime.

It is a super-2 number, since 2×1000006009² = 2000024036072216162, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000005983 and 1000006001.

It is not an unprimeable number, because it can be changed into a prime (1000006019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260287 + ... + 264100.

It is an arithmetic number, because the mean of its divisors is an integer number (250133076).

Almost surely, 2^1000006009 is an apocalyptic number.

It is an amenable number.

1000006009 is a deficient number, since it is larger than the sum of its proper divisors (526295).

1000006009 is an equidigital number, since it uses as much as digits as its factorization.

1000006009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526294.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1000006009 is about 31622.8716121734. The cubic root of 1000006009 is about 1000.0020029960.

The spelling of 1000006009 in words is "one billion, six thousand, nine".