4544389 has 4 divisors (see below), whose sum is σ = 4811724. Its totient is φ = 4277056.

The previous prime is 4544359. The next prime is 4544411. The reversal of 4544389 is 9834454.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2117025 + 2427364 = 1455^2 + 1558^2 .

It is a cyclic number.

It is not a de Polignac number, because 4544389 - 2⁷ = 4544261 is a prime.

It is a Duffinian number.

4544389 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4544339) 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 3 ways as a sum of consecutive naturals, for example, 133642 + ... + 133675.

It is an arithmetic number, because the mean of its divisors is an integer number (1202931).

Almost surely, 2^4544389 is an apocalyptic number.

It is an amenable number.

4544389 is a deficient number, since it is larger than the sum of its proper divisors (267335).

4544389 is a wasteful number, since it uses less digits than its factorization.

4544389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267334.

The product of its digits is 69120, while the sum is 37.

The square root of 4544389 is about 2131.7572563498. The cubic root of 4544389 is about 165.6374363036.

The spelling of 4544389 in words is "four million, five hundred forty-four thousand, three hundred eighty-nine".