609148729 has 16 divisors (see below), whose sum is σ = 720285696. Its totient is φ = 504118800.

The previous prime is 609148711. The next prime is 609148733. The reversal of 609148729 is 927841906.

It is a cyclic number.

It is not a de Polignac number, because 609148729 - 2¹⁷ = 609017657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609148229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98334 + ... + 104344.

It is an arithmetic number, because the mean of its divisors is an integer number (45017856).

Almost surely, 2^609148729 is an apocalyptic number.

It is an amenable number.

609148729 is a deficient number, since it is larger than the sum of its proper divisors (111136967).

609148729 is a wasteful number, since it uses less digits than its factorization.

609148729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6516.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 609148729 is about 24680.9385761563. The cubic root of 609148729 is about 847.6979133623.

The spelling of 609148729 in words is "six hundred nine million, one hundred forty-eight thousand, seven hundred twenty-nine".