109209017 has 4 divisors (see below), whose sum is σ = 114956880. Its totient is φ = 103461156.

The previous prime is 109209007. The next prime is 109209029. The reversal of 109209017 is 710902901.

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, and also an emirpimes, since its reverse is a distinct semiprime: 710902901 = 1021 ⋅696281.

It is a de Polignac number, because none of the positive numbers 2^k-109209017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109209007) 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, 2873903 + ... + 2873940.

It is an arithmetic number, because the mean of its divisors is an integer number (28739220).

Almost surely, 2^109209017 is an apocalyptic number.

It is an amenable number.

109209017 is a deficient number, since it is larger than the sum of its proper divisors (5747863).

109209017 is an equidigital number, since it uses as much as digits as its factorization.

109209017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5747862.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 109209017 is about 10450.3118135298. The cubic root of 109209017 is about 477.9907577445.

The spelling of 109209017 in words is "one hundred nine million, two hundred nine thousand, seventeen".