109434909 has 4 divisors (see below), whose sum is σ = 145913216. Its totient is φ = 72956604.

The previous prime is 109434901. The next prime is 109434917. The reversal of 109434909 is 909434901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (109434901) and next prime (109434917).

It is not a de Polignac number, because 109434909 - 2³ = 109434901 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109434901) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 18239149 + ... + 18239154.

It is an arithmetic number, because the mean of its divisors is an integer number (36478304).

Almost surely, 2^109434909 is an apocalyptic number.

It is an amenable number.

109434909 is a deficient number, since it is larger than the sum of its proper divisors (36478307).

109434909 is an equidigital number, since it uses as much as digits as its factorization.

109434909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36478306.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 109434909 is about 10461.1141376050. The cubic root of 109434909 is about 478.3200954086.

The spelling of 109434909 in words is "one hundred nine million, four hundred thirty-four thousand, nine hundred nine".