109609986 has 32 divisors (see below), whose sum is σ = 227271168. Its totient is φ = 35205120.

The previous prime is 109609939. The next prime is 109609987. The reversal of 109609986 is 689906901.

It is not an unprimeable number, because it can be changed into a prime (109609987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46656 + ... + 48948.

It is an arithmetic number, because the mean of its divisors is an integer number (7102224).

Almost surely, 2^109609986 is an apocalyptic number.

109609986 is an abundant number, since it is smaller than the sum of its proper divisors (117661182).

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

109609986 is a wasteful number, since it uses less digits than its factorization.

109609986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586.

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 109609986 is about 10469.4787835880. The cubic root of 109609986 is about 478.5750360844.

The spelling of 109609986 in words is "one hundred nine million, six hundred nine thousand, nine hundred eighty-six".