4165989 has 8 divisors (see below), whose sum is σ = 5570112. Its totient is φ = 2769600.

The previous prime is 4165979. The next prime is 4165991. The reversal of 4165989 is 9895614.

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

It is not a de Polignac number, because 4165989 - 2⁵ = 4165957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4165989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4165949) 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 in 7 ways as a sum of consecutive naturals, for example, 529 + ... + 2934.

It is an arithmetic number, because the mean of its divisors is an integer number (696264).

Almost surely, 2^4165989 is an apocalyptic number.

It is an amenable number.

4165989 is a deficient number, since it is larger than the sum of its proper divisors (1404123).

4165989 is a wasteful number, since it uses less digits than its factorization.

4165989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3867.

The product of its digits is 77760, while the sum is 42.

The square root of 4165989 is about 2041.0754518146. The cubic root of 4165989 is about 160.9061732283.

The spelling of 4165989 in words is "four million, one hundred sixty-five thousand, nine hundred eighty-nine".