3989771 has 4 divisors (see below), whose sum is σ = 3994200. Its totient is φ = 3985344.

The previous prime is 3989761. The next prime is 3989801. The reversal of 3989771 is 1779893.

3989771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3989771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3989701) 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 3 ways as a sum of consecutive naturals, for example, 326 + ... + 2843.

It is an arithmetic number, because the mean of its divisors is an integer number (998550).

Almost surely, 2^3989771 is an apocalyptic number.

3989771 is a deficient number, since it is larger than the sum of its proper divisors (4429).

3989771 is a wasteful number, since it uses less digits than its factorization.

3989771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4428.

The product of its digits is 95256, while the sum is 44.

The square root of 3989771 is about 1997.4411130244. The cubic root of 3989771 is about 158.6046769785.

The spelling of 3989771 in words is "three million, nine hundred eighty-nine thousand, seven hundred seventy-one".