3889806 has 32 divisors (see below), whose sum is σ = 8252928. Its totient is φ = 1219680.

The previous prime is 3889801. The next prime is 3889807. The reversal of 3889806 is 6089883.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3889801) 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 15 ways as a sum of consecutive naturals, for example, 9600 + ... + 9996.

It is an arithmetic number, because the mean of its divisors is an integer number (257904).

Almost surely, 2^3889806 is an apocalyptic number.

3889806 is an abundant number, since it is smaller than the sum of its proper divisors (4363122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3889806 is a wasteful number, since it uses less digits than its factorization.

3889806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 3889806 is about 1972.2591107661. The cubic root of 3889806 is about 157.2688268948.

It can be divided in two parts, 388980 and 6, that multiplied together give a triangular number (2333880 = T₂₁₆₀).

The spelling of 3889806 in words is "three million, eight hundred eighty-nine thousand, eight hundred six".