1000109986 has 8 divisors (see below), whose sum is σ = 1502464284. Its totient is φ = 499288560.

The previous prime is 1000109977. The next prime is 1000109987. The reversal of 1000109986 is 6899010001.

It can be written as a sum of positive squares in 2 ways, for example, as 996980625 + 3129361 = 31575^2 + 1769^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1000109987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381585 + ... + 384196.

Almost surely, 2^1000109986 is an apocalyptic number.

1000109986 is a deficient number, since it is larger than the sum of its proper divisors (502354298).

1000109986 is an equidigital number, since it uses as much as digits as its factorization.

1000109986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766436.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 1000109986 is about 31624.5155852228. The cubic root of 1000109986 is about 1000.0366606560.

Adding to 1000109986 its reverse (6899010001), we get a palindrome (7899119987).

The spelling of 1000109986 in words is "one billion, one hundred nine thousand, nine hundred eighty-six".