108916857 has 54 divisors (see below), whose sum is σ = 189839754. Its totient is φ = 59996160.

The previous prime is 108916853. The next prime is 108916859. The reversal of 108916857 is 758619801.

It can be written as a sum of positive squares in only one way, i.e., 108493056 + 423801 = 10416^2 + 651^2 .

It is not a de Polignac number, because 108916857 - 2² = 108916853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108916853) 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 53 ways as a sum of consecutive naturals, for example, 423673 + ... + 423929.

It is an arithmetic number, because the mean of its divisors is an integer number (3515551).

Almost surely, 2^108916857 is an apocalyptic number.

It is an amenable number.

108916857 is a deficient number, since it is larger than the sum of its proper divisors (80922897).

108916857 is a wasteful number, since it uses less digits than its factorization.

108916857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 45.

The square root of 108916857 is about 10436.3239217648. The cubic root of 108916857 is about 477.5641308929.

The spelling of 108916857 in words is "one hundred eight million, nine hundred sixteen thousand, eight hundred fifty-seven".