305222629 has 2 divisors, whose sum is σ = 305222630. Its totient is φ = 305222628.

The previous prime is 305222609. The next prime is 305222639. The reversal of 305222629 is 926222503.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153809604 + 151413025 = 12402^2 + 12305^2 .

It is a cyclic number.

It is not a de Polignac number, because 305222629 - 2⁷ = 305222501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 305222629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305222609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152611314 + 152611315.

It is an arithmetic number, because the mean of its divisors is an integer number (152611315).

Almost surely, 2^305222629 is an apocalyptic number.

It is an amenable number.

305222629 is a deficient number, since it is larger than the sum of its proper divisors (1).

305222629 is an equidigital number, since it uses as much as digits as its factorization.

305222629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 305222629 is about 17470.6218836079. The cubic root of 305222629 is about 673.2952897882.

The spelling of 305222629 in words is "three hundred five million, two hundred twenty-two thousand, six hundred twenty-nine".