306006139 has 2 divisors, whose sum is σ = 306006140. Its totient is φ = 306006138.

The previous prime is 306006133. The next prime is 306006149. The reversal of 306006139 is 931600603.

It is a weak prime.

It is an emirp because it is prime and its reverse (931600603) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 306006139 - 2¹⁹ = 305481851 is a prime.

It is not a weakly prime, because it can be changed into another prime (306006133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153003069 + 153003070.

It is an arithmetic number, because the mean of its divisors is an integer number (153003070).

Almost surely, 2^306006139 is an apocalyptic number.

306006139 is a deficient number, since it is larger than the sum of its proper divisors (1).

306006139 is an equidigital number, since it uses as much as digits as its factorization.

306006139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 306006139 is about 17493.0311552915. The cubic root of 306006139 is about 673.8709164403.

The spelling of 306006139 in words is "three hundred six million, six thousand, one hundred thirty-nine".