109439305 has 8 divisors (see below), whose sum is σ = 131873544. Its totient is φ = 87187200.

The previous prime is 109439273. The next prime is 109439311. The reversal of 109439305 is 503934901.

It can be written as a sum of positive squares in 4 ways, for example, as 27573001 + 81866304 = 5251^2 + 9048^2 .

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

It is not a de Polignac number, because 109439305 - 2⁵ = 109439273 is a prime.

It is a super-2 number, since 2×109439305² = 23953922957766050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44206 + ... + 46615.

It is an arithmetic number, because the mean of its divisors is an integer number (16484193).

Almost surely, 2^109439305 is an apocalyptic number.

It is an amenable number.

109439305 is a deficient number, since it is larger than the sum of its proper divisors (22434239).

109439305 is an equidigital number, since it uses as much as digits as its factorization.

109439305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91067.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 109439305 is about 10461.3242469584. The cubic root of 109439305 is about 478.3265000285.

The spelling of 109439305 in words is "one hundred nine million, four hundred thirty-nine thousand, three hundred five".