108428209 has 8 divisors (see below), whose sum is σ = 109296000. Its totient is φ = 107564016.

The previous prime is 108428143. The next prime is 108428263. The reversal of 108428209 is 902824801.

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

It is a cyclic number.

It is not a de Polignac number, because 108428209 - 2⁷ = 108428081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108428009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97752 + ... + 98854.

It is an arithmetic number, because the mean of its divisors is an integer number (13662000).

Almost surely, 2^108428209 is an apocalyptic number.

It is an amenable number.

108428209 is a deficient number, since it is larger than the sum of its proper divisors (867791).

108428209 is a wasteful number, since it uses less digits than its factorization.

108428209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 108428209 is about 10412.8866794948. The cubic root of 108428209 is about 476.8488739468.

The spelling of 108428209 in words is "one hundred eight million, four hundred twenty-eight thousand, two hundred nine".