609129247 has 2 divisors, whose sum is σ = 609129248. Its totient is φ = 609129246.

The previous prime is 609129233. The next prime is 609129277. The reversal of 609129247 is 742921906.

609129247 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 is a cyclic number.

It is not a de Polignac number, because 609129247 - 2⁷ = 609129119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (609129277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304564623 + 304564624.

It is an arithmetic number, because the mean of its divisors is an integer number (304564624).

Almost surely, 2^609129247 is an apocalyptic number.

609129247 is a deficient number, since it is larger than the sum of its proper divisors (1).

609129247 is an equidigital number, since it uses as much as digits as its factorization.

609129247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 609129247 is about 24680.5438959517. The cubic root of 609129247 is about 847.6888761458.

The spelling of 609129247 in words is "six hundred nine million, one hundred twenty-nine thousand, two hundred forty-seven".