306122449 has 2 divisors, whose sum is σ = 306122450. Its totient is φ = 306122448.

The previous prime is 306122447. The next prime is 306122501. The reversal of 306122449 is 944221603.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 298598400 + 7524049 = 17280^2 + 2743^2 .

It is a cyclic number.

It is not a de Polignac number, because 306122449 - 2¹ = 306122447 is a prime.

Together with 306122447, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 306122449.

It is not a weakly prime, because it can be changed into another prime (306122447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153061224 + 153061225.

It is an arithmetic number, because the mean of its divisors is an integer number (153061225).

Almost surely, 2^306122449 is an apocalyptic number.

It is an amenable number.

306122449 is a deficient number, since it is larger than the sum of its proper divisors (1).

306122449 is an equidigital number, since it uses as much as digits as its factorization.

306122449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 306122449 is about 17496.3553061773. The cubic root of 306122449 is about 673.9562829173.

The spelling of 306122449 in words is "three hundred six million, one hundred twenty-two thousand, four hundred forty-nine".