306228469 has 2 divisors, whose sum is σ = 306228470. Its totient is φ = 306228468.

The previous prime is 306228457. The next prime is 306228493. The reversal of 306228469 is 964822603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253128100 + 53100369 = 15910^2 + 7287^2 .

It is a cyclic number.

It is not a de Polignac number, because 306228469 - 2⁷ = 306228341 is a prime.

It is a super-2 number, since 2×306228469² = 187551750452167922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (306228449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153114234 + 153114235.

It is an arithmetic number, because the mean of its divisors is an integer number (153114235).

Almost surely, 2^306228469 is an apocalyptic number.

It is an amenable number.

306228469 is a deficient number, since it is larger than the sum of its proper divisors (1).

306228469 is an equidigital number, since it uses as much as digits as its factorization.

306228469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 306228469 is about 17499.3848177586. The cubic root of 306228469 is about 674.0340781462.

The spelling of 306228469 in words is "three hundred six million, two hundred twenty-eight thousand, four hundred sixty-nine".