304249609 has 2 divisors, whose sum is σ = 304249610. Its totient is φ = 304249608.

The previous prime is 304249591. The next prime is 304249633. The reversal of 304249609 is 906942403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172344384 + 131905225 = 13128^2 + 11485^2 .

It is a cyclic number.

It is not a de Polignac number, because 304249609 - 2¹¹ = 304247561 is a prime.

It is not a weakly prime, because it can be changed into another prime (304249669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152124804 + 152124805.

It is an arithmetic number, because the mean of its divisors is an integer number (152124805).

Almost surely, 2^304249609 is an apocalyptic number.

It is an amenable number.

304249609 is a deficient number, since it is larger than the sum of its proper divisors (1).

304249609 is an equidigital number, since it uses as much as digits as its factorization.

304249609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 304249609 is about 17442.7523344225. The cubic root of 304249609 is about 672.5790615672.

The spelling of 304249609 in words is "three hundred four million, two hundred forty-nine thousand, six hundred nine".