3989667 has 8 divisors (see below), whose sum is σ = 5803200. Its totient is φ = 2417960.

The previous prime is 3989663. The next prime is 3989683. The reversal of 3989667 is 7669893.

It is a happy number.

3989667 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 3989667 - 2² = 3989663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3989663) 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, 60417 + ... + 60482.

It is an arithmetic number, because the mean of its divisors is an integer number (725400).

Almost surely, 2^3989667 is an apocalyptic number.

3989667 is a deficient number, since it is larger than the sum of its proper divisors (1813533).

3989667 is a wasteful number, since it uses less digits than its factorization.

3989667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120913.

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

The square root of 3989667 is about 1997.4150795466. The cubic root of 3989667 is about 158.6032988685.

It can be divided in two parts, 3989 and 667, that added together give a triangular number (4656 = T₉₆).

The spelling of 3989667 in words is "three million, nine hundred eighty-nine thousand, six hundred sixty-seven".