609449369 has 2 divisors, whose sum is σ = 609449370. Its totient is φ = 609449368.

The previous prime is 609449317. The next prime is 609449419. The reversal of 609449369 is 963944906.

It is a happy number.

609449369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (609449419) can be obtained adding 609449369 to its sum of digits (50).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 350625625 + 258823744 = 18725^2 + 16088^2 .

It is a cyclic number.

It is not a de Polignac number, because 609449369 - 2²⁴ = 592672153 is a prime.

It is a super-2 number, since 2×609449369² = 742857066748996322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (609449969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304724684 + 304724685.

It is an arithmetic number, because the mean of its divisors is an integer number (304724685).

Almost surely, 2^609449369 is an apocalyptic number.

It is an amenable number.

609449369 is a deficient number, since it is larger than the sum of its proper divisors (1).

609449369 is an equidigital number, since it uses as much as digits as its factorization.

609449369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 50.

The square root of 609449369 is about 24687.0283549884. The cubic root of 609449369 is about 847.8373483768.

The spelling of 609449369 in words is "six hundred nine million, four hundred forty-nine thousand, three hundred sixty-nine".