3946870 has 16 divisors (see below), whose sum is σ = 7478640. Its totient is φ = 1495584.

The previous prime is 3946853. The next prime is 3946879. The reversal of 3946870 is 786493.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3946879) 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 7 ways as a sum of consecutive naturals, for example, 10197 + ... + 10576.

It is an arithmetic number, because the mean of its divisors is an integer number (467415).

Almost surely, 2^3946870 is an apocalyptic number.

3946870 is a deficient number, since it is larger than the sum of its proper divisors (3531770).

3946870 is a wasteful number, since it uses less digits than its factorization.

3946870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20799.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 3946870 is about 1986.6730984236. The cubic root of 3946870 is about 158.0341484701.

The spelling of 3946870 in words is "three million, nine hundred forty-six thousand, eight hundred seventy".