109036729 has 4 divisors (see below), whose sum is σ = 109442340. Its totient is φ = 108631120.

The previous prime is 109036709. The next prime is 109036783. The reversal of 109036729 is 927630901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60762025 + 48274704 = 7795^2 + 6948^2 .

It is a cyclic number.

It is not a de Polignac number, because 109036729 - 2⁷ = 109036601 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109036709) 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 3 ways as a sum of consecutive naturals, for example, 202402 + ... + 202939.

It is an arithmetic number, because the mean of its divisors is an integer number (27360585).

Almost surely, 2^109036729 is an apocalyptic number.

It is an amenable number.

109036729 is a deficient number, since it is larger than the sum of its proper divisors (405611).

109036729 is an equidigital number, since it uses as much as digits as its factorization.

109036729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405610.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 109036729 is about 10442.0653608374. The cubic root of 109036729 is about 477.7392662527.

The spelling of 109036729 in words is "one hundred nine million, thirty-six thousand, seven hundred twenty-nine".