306949 has 2 divisors, whose sum is σ = 306950. Its totient is φ = 306948.

The previous prime is 306947. The next prime is 306953. The reversal of 306949 is 949603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 294849 + 12100 = 543^2 + 110^2 .

It is a cyclic number.

It is not a de Polignac number, because 306949 - 2¹ = 306947 is a prime.

Together with 306947, it forms a pair of twin primes.

It is a Chen prime.

306949 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 306949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (306941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153474 + 153475.

It is an arithmetic number, because the mean of its divisors is an integer number (153475).

2³⁰⁶⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

306949 is a deficient number, since it is larger than the sum of its proper divisors (1).

306949 is an equidigital number, since it uses as much as digits as its factorization.

306949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 306949 is about 554.0297825930. The cubic root of 306949 is about 67.4562313420.

It can be divided in two parts, 30694 and 9, that added together give a palindrome (30703).

The spelling of 306949 in words is "three hundred six thousand, nine hundred forty-nine".