108939221 has 8 divisors (see below), whose sum is σ = 111624480. Its totient is φ = 106277392.

The previous prime is 108939209. The next prime is 108939241. The reversal of 108939221 is 122939801.

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 108939221 - 2⁶ = 108939157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108939241) 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, 3746 + ... + 15228.

It is an arithmetic number, because the mean of its divisors is an integer number (13953060).

Almost surely, 2^108939221 is an apocalyptic number.

It is an amenable number.

108939221 is a deficient number, since it is larger than the sum of its proper divisors (2685259).

108939221 is a wasteful number, since it uses less digits than its factorization.

108939221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11715.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 108939221 is about 10437.3953168403. The cubic root of 108939221 is about 477.5968148857.

The spelling of 108939221 in words is "one hundred eight million, nine hundred thirty-nine thousand, two hundred twenty-one".