3886909 has 4 divisors (see below), whose sum is σ = 4185916. Its totient is φ = 3587904.

The previous prime is 3886889. The next prime is 3886919. The reversal of 3886909 is 9096883.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1071225 + 2815684 = 1035^2 + 1678^2 .

It is a cyclic number.

It is not a de Polignac number, because 3886909 - 2⁹ = 3886397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3886919) 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, 149484 + ... + 149509.

It is an arithmetic number, because the mean of its divisors is an integer number (1046479).

Almost surely, 2^3886909 is an apocalyptic number.

It is an amenable number.

3886909 is a deficient number, since it is larger than the sum of its proper divisors (299007).

3886909 is a wasteful number, since it uses less digits than its factorization.

3886909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299006.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 3886909 is about 1971.5245370018. The cubic root of 3886909 is about 157.2297743092.

The spelling of 3886909 in words is "three million, eight hundred eighty-six thousand, nine hundred nine".