109921866 has 8 divisors (see below), whose sum is σ = 219843744. Its totient is φ = 36640620.

The previous prime is 109921831. The next prime is 109921873. The reversal of 109921866 is 668129901.

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

109921866 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9160150 + ... + 9160161.

It is an arithmetic number, because the mean of its divisors is an integer number (27480468).

Almost surely, 2^109921866 is an apocalyptic number.

109921866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109921866 is a wasteful number, since it uses less digits than its factorization.

109921866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18320316.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 109921866 is about 10484.3629277129. The cubic root of 109921866 is about 479.0285125323.

The spelling of 109921866 in words is "one hundred nine million, nine hundred twenty-one thousand, eight hundred sixty-six".