3686139 has 12 divisors (see below), whose sum is σ = 5404776. Its totient is φ = 2420352.

The previous prime is 3686131. The next prime is 3686153. The reversal of 3686139 is 9316863.

It is a happy number.

3686139 is a `hidden beast` number, since 36 + 8 + 613 + 9 = 666.

It is not a de Polignac number, because 3686139 - 2³ = 3686131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3686131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2454 + ... + 3659.

It is an arithmetic number, because the mean of its divisors is an integer number (450398).

Almost surely, 2^3686139 is an apocalyptic number.

3686139 is a deficient number, since it is larger than the sum of its proper divisors (1718637).

3686139 is a wasteful number, since it uses less digits than its factorization.

3686139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6186 (or 6183 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 3686139 is about 1919.9320300469. The cubic root of 3686139 is about 154.4746557227.

The spelling of 3686139 in words is "three million, six hundred eighty-six thousand, one hundred thirty-nine".