3989166 has 32 divisors (see below), whose sum is σ = 8425728. Its totient is φ = 1256640.

The previous prime is 3989159. The next prime is 3989171. The reversal of 3989166 is 6619893.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18801 + ... + 19011.

It is an arithmetic number, because the mean of its divisors is an integer number (263304).

Almost surely, 2^3989166 is an apocalyptic number.

3989166 is an abundant number, since it is smaller than the sum of its proper divisors (4436562).

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

3989166 is a wasteful number, since it uses less digits than its factorization.

3989166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376.

The product of its digits is 69984, while the sum is 42.

The square root of 3989166 is about 1997.2896635190. The cubic root of 3989166 is about 158.5966597531.

The spelling of 3989166 in words is "three million, nine hundred eighty-nine thousand, one hundred sixty-six".