108091899 has 24 divisors (see below), whose sum is σ = 166609872. Its totient is φ = 67292160.

The previous prime is 108091877. The next prime is 108091909. The reversal of 108091899 is 998190801.

It is not a de Polignac number, because 108091899 - 2¹¹ = 108089851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (108091849) 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 23 ways as a sum of consecutive naturals, for example, 17347 + ... + 22739.

It is an arithmetic number, because the mean of its divisors is an integer number (6942078).

Almost surely, 2^108091899 is an apocalyptic number.

108091899 is a deficient number, since it is larger than the sum of its proper divisors (58517973).

108091899 is a wasteful number, since it uses less digits than its factorization.

108091899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5547 (or 5544 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 45.

The square root of 108091899 is about 10396.7253979318. The cubic root of 108091899 is about 476.3553518973.

The spelling of 108091899 in words is "one hundred eight million, ninety-one thousand, eight hundred ninety-nine".