3806389 has 8 divisors (see below), whose sum is σ = 3928320. Its totient is φ = 3686256.

The previous prime is 3806347. The next prime is 3806423. The reversal of 3806389 is 9836083.

It is a happy number.

3806389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3806389 - 2¹¹ = 3804341 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3806189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4752 + ... + 5494.

It is an arithmetic number, because the mean of its divisors is an integer number (491040).

Almost surely, 2^3806389 is an apocalyptic number.

It is an amenable number.

3806389 is a deficient number, since it is larger than the sum of its proper divisors (121931).

3806389 is a wasteful number, since it uses less digits than its factorization.

3806389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 3806389 is about 1950.9969246516. The cubic root of 3806389 is about 156.1364820275.

The spelling of 3806389 in words is "three million, eight hundred six thousand, three hundred eighty-nine".