30000009 has 8 divisors (see below), whose sum is σ = 43076992. Its totient is φ = 18461520.

The previous prime is 30000001. The next prime is 30000023. The reversal of 30000009 is 90000003.

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

It is not a de Polignac number, because 30000009 - 2³ = 30000001 is a prime.

It is a Duffinian number.

30000009 is a modest number, since divided by 9 gives 3 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 29999949 and 30000003.

It is not an unprimeable number, because it can be changed into a prime (30000001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384577 + ... + 384654.

It is an arithmetic number, because the mean of its divisors is an integer number (5384624).

Almost surely, 2^30000009 is an apocalyptic number.

30000009 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

30000009 is a deficient number, since it is larger than the sum of its proper divisors (13076983).

30000009 is a wasteful number, since it uses less digits than its factorization.

30000009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769247.

The product of its (nonzero) digits is 27, while the sum is 12.

The square root of 30000009 is about 5477.2263966354. The cubic root of 30000009 is about 310.7232816677.

It can be divided in two parts, 3000000 and 9, that multiplied together give a cube (27000000 = 300³).

The spelling of 30000009 in words is "thirty million, nine", and thus it is an aban number and an uban number.