4128789 has 12 divisors (see below), whose sum is σ = 6404064. Its totient is φ = 2359224.

The previous prime is 4128781. The next prime is 4128821. The reversal of 4128789 is 9878214.

It is not a de Polignac number, because 4128789 - 2³ = 4128781 is a prime.

4128789 is a lucky number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4128781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13897 + ... + 14190.

It is an arithmetic number, because the mean of its divisors is an integer number (533672).

Almost surely, 2^4128789 is an apocalyptic number.

4128789 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

4128789 is a deficient number, since it is larger than the sum of its proper divisors (2275275).

4128789 is a wasteful number, since it uses less digits than its factorization.

4128789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28104 (or 28097 counting only the distinct ones).

The product of its digits is 32256, while the sum is 39.

The square root of 4128789 is about 2031.9421743741. The cubic root of 4128789 is about 160.4258059072.

The spelling of 4128789 in words is "four million, one hundred twenty-eight thousand, seven hundred eighty-nine".