609638369 has 2 divisors, whose sum is σ = 609638370. Its totient is φ = 609638368.

The previous prime is 609638347. The next prime is 609638431. The reversal of 609638369 is 963836906.

609638369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 569442769 + 40195600 = 23863^2 + 6340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-609638369 is a prime.

It is a super-2 number, since 2×609638369² = 743317881913960322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (609638969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304819184 + 304819185.

It is an arithmetic number, because the mean of its divisors is an integer number (304819185).

Almost surely, 2^609638369 is an apocalyptic number.

It is an amenable number.

609638369 is a deficient number, since it is larger than the sum of its proper divisors (1).

609638369 is an equidigital number, since it uses as much as digits as its factorization.

609638369 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 609638369 is about 24690.8559794917. The cubic root of 609638369 is about 847.9249819607.

The spelling of 609638369 in words is "six hundred nine million, six hundred thirty-eight thousand, three hundred sixty-nine".