306916949 has 2 divisors, whose sum is σ = 306916950. Its totient is φ = 306916948.

The previous prime is 306916943. The next prime is 306917029. The reversal of 306916949 is 949619603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214622500 + 92294449 = 14650^2 + 9607^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-306916949 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (306916943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153458474 + 153458475.

It is an arithmetic number, because the mean of its divisors is an integer number (153458475).

Almost surely, 2^306916949 is an apocalyptic number.

It is an amenable number.

306916949 is a deficient number, since it is larger than the sum of its proper divisors (1).

306916949 is an equidigital number, since it uses as much as digits as its factorization.

306916949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 306916949 is about 17519.0453221630. The cubic root of 306916949 is about 674.5388337870.

The spelling of 306916949 in words is "three hundred six million, nine hundred sixteen thousand, nine hundred forty-nine".