109665329 has 4 divisors (see below), whose sum is σ = 109740276. Its totient is φ = 109590384.

The previous prime is 109665323. The next prime is 109665331. The reversal of 109665329 is 923566901.

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 85063729 + 24601600 = 9223^2 + 4960^2 .

It is a cyclic number.

It is not a de Polignac number, because 109665329 - 2⁴ = 109665313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109665323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35234 + ... + 38219.

It is an arithmetic number, because the mean of its divisors is an integer number (27435069).

Almost surely, 2^109665329 is an apocalyptic number.

It is an amenable number.

109665329 is a deficient number, since it is larger than the sum of its proper divisors (74947).

109665329 is an equidigital number, since it uses as much as digits as its factorization.

109665329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74946.

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 109665329 is about 10472.1215138099. The cubic root of 109665329 is about 478.6555680468.

The spelling of 109665329 in words is "one hundred nine million, six hundred sixty-five thousand, three hundred twenty-nine".