109989986 has 4 divisors (see below), whose sum is σ = 164984982. Its totient is φ = 54994992.

The previous prime is 109989973. The next prime is 109990007. The reversal of 109989986 is 689989901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 88078225 + 21911761 = 9385^2 + 4681^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27497495 + ... + 27497498.

Almost surely, 2^109989986 is an apocalyptic number.

109989986 is a deficient number, since it is larger than the sum of its proper divisors (54994996).

109989986 is an equidigital number, since it uses as much as digits as its factorization.

109989986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54994995.

The product of its (nonzero) digits is 2519424, while the sum is 59.

The square root of 109989986 is about 10487.6110721174. The cubic root of 109989986 is about 479.1274454837.

The spelling of 109989986 in words is "one hundred nine million, nine hundred eighty-nine thousand, nine hundred eighty-six".