305306009 has 16 divisors (see below), whose sum is σ = 327317760. Its totient is φ = 283772160.

The previous prime is 305305969. The next prime is 305306017. The reversal of 305306009 is 900603503.

It is not a de Polignac number, because 305306009 - 2⁸ = 305305753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (305306039) 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 15 ways as a sum of consecutive naturals, for example, 662039 + ... + 662499.

It is an arithmetic number, because the mean of its divisors is an integer number (20457360).

Almost surely, 2^305306009 is an apocalyptic number.

It is an amenable number.

305306009 is a deficient number, since it is larger than the sum of its proper divisors (22011751).

305306009 is a wasteful number, since it uses less digits than its factorization.

305306009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880.

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 305306009 is about 17473.0080123601. The cubic root of 305306009 is about 673.3565939475.

The spelling of 305306009 in words is "three hundred five million, three hundred six thousand, nine".