3967689 has 8 divisors (see below), whose sum is σ = 5771232. Its totient is φ = 2404640.

The previous prime is 3967687. The next prime is 3967699. The reversal of 3967689 is 9867693.

It is a happy number.

3967689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3967689 - 2¹ = 3967687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3967687) 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, 60084 + ... + 60149.

It is an arithmetic number, because the mean of its divisors is an integer number (721404).

Almost surely, 2^3967689 is an apocalyptic number.

It is an amenable number.

3967689 is a deficient number, since it is larger than the sum of its proper divisors (1803543).

3967689 is a wasteful number, since it uses less digits than its factorization.

3967689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120247.

The product of its digits is 489888, while the sum is 48.

The square root of 3967689 is about 1991.9058712700. The cubic root of 3967689 is about 158.3115281760.

It can be divided in two parts, 3967 and 689, that added together give a triangular number (4656 = T₉₆).

The spelling of 3967689 in words is "three million, nine hundred sixty-seven thousand, six hundred eighty-nine".