307009 has 2 divisors, whose sum is σ = 307010. Its totient is φ = 307008.

The previous prime is 306991. The next prime is 307019. The reversal of 307009 is 900703.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255025 + 51984 = 505^2 + 228^2 .

It is a cyclic number.

It is not a de Polignac number, because 307009 - 2¹¹ = 304961 is a prime.

It is a Chen prime.

307009 is a lucky number.

It is a nialpdrome in base 13.

It is not a weakly prime, because it can be changed into another prime (307019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153504 + 153505.

It is an arithmetic number, because the mean of its divisors is an integer number (153505).

2³⁰⁷⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

307009 is a deficient number, since it is larger than the sum of its proper divisors (1).

307009 is an equidigital number, since it uses as much as digits as its factorization.

307009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189, while the sum is 19.

The square root of 307009 is about 554.0839286606. The cubic root of 307009 is about 67.4606263285.

The spelling of 307009 in words is "three hundred seven thousand, nine".