2109288729 has 8 divisors (see below), whose sum is σ = 2820731680. Its totient is φ = 1402019136.

The previous prime is 2109288691. The next prime is 2109288733. The reversal of 2109288729 is 9278829012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2109288729 - 2⁸ = 2109288473 is a prime.

It is a super-3 number, since 3×2109288729³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2109288529) 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 7 ways as a sum of consecutive naturals, for example, 1042159 + ... + 1044180.

It is an arithmetic number, because the mean of its divisors is an integer number (352591460).

Almost surely, 2^2109288729 is an apocalyptic number.

It is an amenable number.

2109288729 is a deficient number, since it is larger than the sum of its proper divisors (711442951).

2109288729 is a wasteful number, since it uses less digits than its factorization.

2109288729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2086679.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 2109288729 is about 45926.9934678942. The cubic root of 2109288729 is about 1282.4644757591.

The spelling of 2109288729 in words is "two billion, one hundred nine million, two hundred eighty-eight thousand, seven hundred twenty-nine".