305980469 has 2 divisors, whose sum is σ = 305980470. Its totient is φ = 305980468.

The previous prime is 305980457. The next prime is 305980471. The reversal of 305980469 is 964089503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198443569 + 107536900 = 14087^2 + 10370^2 .

It is a cyclic number.

It is not a de Polignac number, because 305980469 - 2¹² = 305976373 is a prime.

It is a super-2 number, since 2×305980469² = 187248094818919922, which contains 22 as substring.

Together with 305980471, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305980439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152990234 + 152990235.

It is an arithmetic number, because the mean of its divisors is an integer number (152990235).

Almost surely, 2^305980469 is an apocalyptic number.

It is an amenable number.

305980469 is a deficient number, since it is larger than the sum of its proper divisors (1).

305980469 is an equidigital number, since it uses as much as digits as its factorization.

305980469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 305980469 is about 17492.2974191499. The cubic root of 305980469 is about 673.8520728639.

The spelling of 305980469 in words is "three hundred five million, nine hundred eighty thousand, four hundred sixty-nine".