308348849 has 2 divisors, whose sum is σ = 308348850. Its totient is φ = 308348848.

The previous prime is 308348837. The next prime is 308348867. The reversal of 308348849 is 948843803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 254179249 + 54169600 = 15943^2 + 7360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-308348849 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (308348819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154174424 + 154174425.

It is an arithmetic number, because the mean of its divisors is an integer number (154174425).

Almost surely, 2^308348849 is an apocalyptic number.

It is an amenable number.

308348849 is a deficient number, since it is larger than the sum of its proper divisors (1).

308348849 is an equidigital number, since it uses as much as digits as its factorization.

308348849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 47.

The square root of 308348849 is about 17559.8647204356. The cubic root of 308348849 is about 675.5862115552.

The spelling of 308348849 in words is "three hundred eight million, three hundred forty-eight thousand, eight hundred forty-nine".