3138909 has 8 divisors (see below), whose sum is σ = 4200672. Its totient is φ = 2084880.

The previous prime is 3138899. The next prime is 3138911. The reversal of 3138909 is 9098313.

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

It is not a de Polignac number, because 3138909 - 2⁴ = 3138893 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 3138909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 907 + ... + 2664.

It is an arithmetic number, because the mean of its divisors is an integer number (525084).

Almost surely, 2^3138909 is an apocalyptic number.

It is an amenable number.

3138909 is a deficient number, since it is larger than the sum of its proper divisors (1061763).

3138909 is a wasteful number, since it uses less digits than its factorization.

3138909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3867.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 3138909 is about 1771.6966444626. The cubic root of 3138909 is about 146.4174734287.

The spelling of 3138909 in words is "three million, one hundred thirty-eight thousand, nine hundred nine".