3937989 has 16 divisors (see below), whose sum is σ = 5852160. Its totient is φ = 2334960.

The previous prime is 3937981. The next prime is 3937993. The reversal of 3937989 is 9897393.

3937989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3937989 - 2³ = 3937981 is a prime.

3937989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3937981) 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 15 ways as a sum of consecutive naturals, for example, 282 + ... + 2820.

It is an arithmetic number, because the mean of its divisors is an integer number (365760).

Almost surely, 2^3937989 is an apocalyptic number.

It is an amenable number.

3937989 is a deficient number, since it is larger than the sum of its proper divisors (1914171).

3937989 is a wasteful number, since it uses less digits than its factorization.

3937989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600.

The product of its digits is 367416, while the sum is 48.

The square root of 3937989 is about 1984.4366958913. The cubic root of 3937989 is about 157.9155266017.

The spelling of 3937989 in words is "three million, nine hundred thirty-seven thousand, nine hundred eighty-nine".