3109986 has 48 divisors (see below), whose sum is σ = 7469280. Its totient is φ = 927360.

The previous prime is 3109979. The next prime is 3109999. The reversal of 3109986 is 6899013.

3109986 is nontrivially palindromic in base 5.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3109986.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22305 + ... + 22443.

It is an arithmetic number, because the mean of its divisors is an integer number (155610).

Almost surely, 2^3109986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3109986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3734640).

3109986 is an abundant number, since it is smaller than the sum of its proper divisors (4359294).

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

3109986 is a wasteful number, since it uses less digits than its factorization.

3109986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 3109986 is about 1763.5152395145. The cubic root of 3109986 is about 145.9663711876.

It can be divided in two parts, 3109 and 986, that added together give a triangular number (4095 = T₉₀).

The spelling of 3109986 in words is "three million, one hundred nine thousand, nine hundred eighty-six".