4129989 has 8 divisors (see below), whose sum is σ = 5517792. Its totient is φ = 2747760.

The previous prime is 4129987. The next prime is 4130003. The reversal of 4129989 is 9899214.

4129989 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 not a de Polignac number, because 4129989 - 2¹ = 4129987 is a prime.

It is a super-3 number, since 3×4129989³ (a number of 21 digits) contains 333 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 4129989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4129981) 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, 859 + ... + 2999.

It is an arithmetic number, because the mean of its divisors is an integer number (689724).

Almost surely, 2^4129989 is an apocalyptic number.

It is an amenable number.

4129989 is a deficient number, since it is larger than the sum of its proper divisors (1387803).

4129989 is a wasteful number, since it uses less digits than its factorization.

4129989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2787.

The product of its digits is 46656, while the sum is 42.

The square root of 4129989 is about 2032.2374369153. The cubic root of 4129989 is about 160.4413465673.

It can be divided in two parts, 412 and 9989, that added together give a palindrome (10401).

The spelling of 4129989 in words is "four million, one hundred twenty-nine thousand, nine hundred eighty-nine".