4389009 has 16 divisors (see below), whose sum is σ = 6350400. Its totient is φ = 2685440.

The previous prime is 4388987. The next prime is 4389017. The reversal of 4389009 is 9009834.

It is a cyclic number.

It is not a de Polignac number, because 4389009 - 2¹⁷ = 4257937 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4389029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1042 + ... + 3140.

It is an arithmetic number, because the mean of its divisors is an integer number (396900).

Almost surely, 2^4389009 is an apocalyptic number.

It is an amenable number.

4389009 is a deficient number, since it is larger than the sum of its proper divisors (1961391).

4389009 is a wasteful number, since it uses less digits than its factorization.

4389009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 4389009 is about 2094.9961813808. The cubic root of 4389009 is about 163.7276985342.

The spelling of 4389009 in words is "four million, three hundred eighty-nine thousand, nine".