3989143 has 8 divisors (see below), whose sum is σ = 4185216. Its totient is φ = 3795000.

The previous prime is 3989137. The next prime is 3989147. The reversal of 3989143 is 3419893.

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

It is not a de Polignac number, because 3989143 - 2²¹ = 1891991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3989147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5428 + ... + 6118.

It is an arithmetic number, because the mean of its divisors is an integer number (523152).

Almost surely, 2^3989143 is an apocalyptic number.

3989143 is a deficient number, since it is larger than the sum of its proper divisors (196073).

3989143 is a wasteful number, since it uses less digits than its factorization.

3989143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965.

The product of its digits is 23328, while the sum is 37.

The square root of 3989143 is about 1997.2839057079. The cubic root of 3989143 is about 158.5963549501.

The spelling of 3989143 in words is "three million, nine hundred eighty-nine thousand, one hundred forty-three".