3959890 has 16 divisors (see below), whose sum is σ = 7776000. Its totient is φ = 1439920.

The previous prime is 3959873. The next prime is 3959899. The reversal of 3959890 is 989593.

3959890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3959899) 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, 17890 + ... + 18109.

It is an arithmetic number, because the mean of its divisors is an integer number (486000).

Almost surely, 2^3959890 is an apocalyptic number.

3959890 is a deficient number, since it is larger than the sum of its proper divisors (3816110).

3959890 is a wasteful number, since it uses less digits than its factorization.

3959890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36017.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 3959890 is about 1989.9472354814. The cubic root of 3959890 is about 158.2077329558.

The spelling of 3959890 in words is "three million, nine hundred fifty-nine thousand, eight hundred ninety".