3109987 has 4 divisors (see below), whose sum is σ = 3168720. Its totient is φ = 3051256.

The previous prime is 3109979. The next prime is 3109999. The reversal of 3109987 is 7899013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7899013 = 599 ⋅13187.

It is a cyclic number.

It is not a de Polignac number, because 3109987 - 2³ = 3109979 is a prime.

It is a Duffinian number.

3109987 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3109937) by changing a digit.

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, 29287 + ... + 29392.

It is an arithmetic number, because the mean of its divisors is an integer number (792180).

Almost surely, 2^3109987 is an apocalyptic number.

3109987 is a deficient number, since it is larger than the sum of its proper divisors (58733).

3109987 is an equidigital number, since it uses as much as digits as its factorization.

3109987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58732.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 3109987 is about 1763.5155230391. The cubic root of 3109987 is about 145.9663868325.

It can be divided in two parts, 3109 and 987, that added together give a 12-th power (4096 = 2¹²).

The spelling of 3109987 in words is "three million, one hundred nine thousand, nine hundred eighty-seven".