3109639 has 8 divisors (see below), whose sum is σ = 3365712. Its totient is φ = 2856000.

The previous prime is 3109637. The next prime is 3109649. The reversal of 3109639 is 9369013.

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

It is a cyclic number.

It is not a de Polignac number, because 3109639 - 2¹ = 3109637 is a prime.

It is a Duffinian number.

3109639 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3109639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3109633) 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 7 ways as a sum of consecutive naturals, for example, 2787 + ... + 3739.

It is an arithmetic number, because the mean of its divisors is an integer number (420714).

Almost surely, 2^3109639 is an apocalyptic number.

3109639 is a deficient number, since it is larger than the sum of its proper divisors (256073).

3109639 is a wasteful number, since it uses less digits than its factorization.

3109639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217.

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 3109639 is about 1763.4168537246. The cubic root of 3109639 is about 145.9609422012.

The spelling of 3109639 in words is "three million, one hundred nine thousand, six hundred thirty-nine".