109709729 has 8 divisors (see below), whose sum is σ = 112300032. Its totient is φ = 107148960.

The previous prime is 109709689. The next prime is 109709731. The reversal of 109709729 is 927907901.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109709729 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109709729.

It is not an unprimeable number, because it can be changed into a prime (109709029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224 + ... + 14814.

It is an arithmetic number, because the mean of its divisors is an integer number (14037504).

Almost surely, 2^109709729 is an apocalyptic number.

It is an amenable number.

109709729 is a deficient number, since it is larger than the sum of its proper divisors (2590303).

109709729 is a wasteful number, since it uses less digits than its factorization.

109709729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14767.

The product of its (nonzero) digits is 71442, while the sum is 44.

The square root of 109709729 is about 10474.2412135677. The cubic root of 109709729 is about 478.7201567974.

The spelling of 109709729 in words is "one hundred nine million, seven hundred nine thousand, seven hundred twenty-nine".