4238557 has 4 divisors (see below), whose sum is σ = 4244380. Its totient is φ = 4232736.

The previous prime is 4238551. The next prime is 4238567. The reversal of 4238557 is 7558324.

It is a happy number.

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 509796 + 3728761 = 714^2 + 1931^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4238557 is a prime.

It is a Duffinian number.

4238557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4238551) 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, 1632 + ... + 3337.

It is an arithmetic number, because the mean of its divisors is an integer number (1061095).

Almost surely, 2^4238557 is an apocalyptic number.

It is an amenable number.

4238557 is a deficient number, since it is larger than the sum of its proper divisors (5823).

4238557 is an equidigital number, since it uses as much as digits as its factorization.

4238557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5822.

The product of its digits is 33600, while the sum is 34.

The square root of 4238557 is about 2058.7756070053. The cubic root of 4238557 is about 161.8350834033.

The spelling of 4238557 in words is "four million, two hundred thirty-eight thousand, five hundred fifty-seven".