3990789 has 24 divisors (see below), whose sum is σ = 6525792. Its totient is φ = 2417040.

The previous prime is 3990773. The next prime is 3990827. The reversal of 3990789 is 9870993.

It is a happy number.

3990789 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 3990789 - 2⁴ = 3990773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990689) 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 23 ways as a sum of consecutive naturals, for example, 1927 + ... + 3419.

It is an arithmetic number, because the mean of its divisors is an integer number (271908).

Almost surely, 2^3990789 is an apocalyptic number.

It is an amenable number.

3990789 is a deficient number, since it is larger than the sum of its proper divisors (2535003).

3990789 is a wasteful number, since it uses less digits than its factorization.

3990789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519 (or 1507 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 3990789 is about 1997.6959228071. The cubic root of 3990789 is about 158.6181652907.

The spelling of 3990789 in words is "three million, nine hundred ninety thousand, seven hundred eighty-nine".