306800849 has 2 divisors, whose sum is σ = 306800850. Its totient is φ = 306800848.

The previous prime is 306800807. The next prime is 306800861. The reversal of 306800849 is 948008603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 291316624 + 15484225 = 17068^2 + 3935^2 .

It is a cyclic number.

It is not a de Polignac number, because 306800849 - 2²⁴ = 290023633 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (306808849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153400424 + 153400425.

It is an arithmetic number, because the mean of its divisors is an integer number (153400425).

Almost surely, 2^306800849 is an apocalyptic number.

It is an amenable number.

306800849 is a deficient number, since it is larger than the sum of its proper divisors (1).

306800849 is an equidigital number, since it uses as much as digits as its factorization.

306800849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 306800849 is about 17515.7314720225. The cubic root of 306800849 is about 674.4537686082.

The spelling of 306800849 in words is "three hundred six million, eight hundred thousand, eight hundred forty-nine".