3989756 has 6 divisors (see below), whose sum is σ = 6982080. Its totient is φ = 1994876.

The previous prime is 3989729. The next prime is 3989759. The reversal of 3989756 is 6579893.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 3989756.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3989759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498716 + ... + 498723.

It is an arithmetic number, because the mean of its divisors is an integer number (1163680).

Almost surely, 2^3989756 is an apocalyptic number.

It is an amenable number.

3989756 is a deficient number, since it is larger than the sum of its proper divisors (2992324).

3989756 is a wasteful number, since it uses less digits than its factorization.

3989756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997443 (or 997441 counting only the distinct ones).

The product of its digits is 408240, while the sum is 47.

The square root of 3989756 is about 1997.4373582168. The cubic root of 3989756 is about 158.6044782141.

The spelling of 3989756 in words is "three million, nine hundred eighty-nine thousand, seven hundred fifty-six".