4238389 has 4 divisors (see below), whose sum is σ = 4487724. Its totient is φ = 3989056.

The previous prime is 4238309. The next prime is 4238393. The reversal of 4238389 is 9838324.

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 3204100 + 1034289 = 1790^2 + 1017^2 .

It is a cyclic number.

It is not a de Polignac number, because 4238389 - 2⁷ = 4238261 is a prime.

It is a d-powerful number, because it can be written as 4¹¹ + 2¹¹ + 3⁷ + 8³ + 3⁸ + 8⁵ + 9 .

It is a Duffinian number.

4238389 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4238309) 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, 124642 + ... + 124675.

It is an arithmetic number, because the mean of its divisors is an integer number (1121931).

Almost surely, 2^4238389 is an apocalyptic number.

It is an amenable number.

4238389 is a deficient number, since it is larger than the sum of its proper divisors (249335).

4238389 is a wasteful number, since it uses less digits than its factorization.

4238389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249334.

The product of its digits is 41472, while the sum is 37.

The square root of 4238389 is about 2058.7348056513. The cubic root of 4238389 is about 161.8329452029.

The spelling of 4238389 in words is "four million, two hundred thirty-eight thousand, three hundred eighty-nine".