109839866 has 8 divisors (see below), whose sum is σ = 165280500. Its totient is φ = 54746368.

The previous prime is 109839853. The next prime is 109839883. The reversal of 109839866 is 668938901.

It can be written as a sum of positive squares in 2 ways, for example, as 109641841 + 198025 = 10471^2 + 445^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85991 + ... + 87258.

Almost surely, 2^109839866 is an apocalyptic number.

109839866 is a deficient number, since it is larger than the sum of its proper divisors (55440634).

109839866 is a wasteful number, since it uses less digits than its factorization.

109839866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173568.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 109839866 is about 10480.4516124068. The cubic root of 109839866 is about 478.9093669640.

The spelling of 109839866 in words is "one hundred nine million, eight hundred thirty-nine thousand, eight hundred sixty-six".