109239305 has 16 divisors (see below), whose sum is σ = 156328704. Its totient is φ = 71649600.

The previous prime is 109239301. The next prime is 109239313. The reversal of 109239305 is 503932901.

It is not a de Polignac number, because 109239305 - 2² = 109239301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109239301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67046 + ... + 68655.

It is an arithmetic number, because the mean of its divisors is an integer number (9770544).

Almost surely, 2^109239305 is an apocalyptic number.

It is an amenable number.

109239305 is a deficient number, since it is larger than the sum of its proper divisors (47089399).

109239305 is a wasteful number, since it uses less digits than its factorization.

109239305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135736.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 109239305 is about 10451.7608564299. The cubic root of 109239305 is about 478.0349422704.

The spelling of 109239305 in words is "one hundred nine million, two hundred thirty-nine thousand, three hundred five".