4389789 has 4 divisors (see below), whose sum is σ = 5853056. Its totient is φ = 2926524.

The previous prime is 4389769. The next prime is 4389799. The reversal of 4389789 is 9879834.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4389789 - 2⁸ = 4389533 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4389769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 731629 + ... + 731634.

It is an arithmetic number, because the mean of its divisors is an integer number (1463264).

Almost surely, 2^4389789 is an apocalyptic number.

It is an amenable number.

4389789 is a deficient number, since it is larger than the sum of its proper divisors (1463267).

4389789 is a wasteful number, since it uses less digits than its factorization.

4389789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463266.

The product of its digits is 435456, while the sum is 48.

The square root of 4389789 is about 2095.1823309679. The cubic root of 4389789 is about 163.7373970061.

The spelling of 4389789 in words is "four million, three hundred eighty-nine thousand, seven hundred eighty-nine".