3945670 has 16 divisors (see below), whose sum is σ = 7137360. Its totient is φ = 1570464.

The previous prime is 3945661. The next prime is 3945671. The reversal of 3945670 is 765493.

3945670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3945671) 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, 1429 + ... + 3151.

It is an arithmetic number, because the mean of its divisors is an integer number (446085).

Almost surely, 2^3945670 is an apocalyptic number.

3945670 is a deficient number, since it is larger than the sum of its proper divisors (3191690).

3945670 is a wasteful number, since it uses less digits than its factorization.

3945670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 3945670 is about 1986.3710630192. The cubic root of 3945670 is about 158.0181306973.

The spelling of 3945670 in words is "three million, nine hundred forty-five thousand, six hundred seventy".