4239872 has 90 divisors (see below), whose sum is σ = 10670913. Its totient is φ = 1677312.

The previous prime is 4239857. The next prime is 4239877. The reversal of 4239872 is 2789324.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 3625216 + 614656 = 1904^2 + 784^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1456.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4239877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 326138 + ... + 326150.

Almost surely, 2^4239872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4239872

4239872 is an abundant number, since it is smaller than the sum of its proper divisors (6431041).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4239872 is an equidigital number, since it uses as much as digits as its factorization.

4239872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58 (or 22 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 4239872 is about 2059.0949468152. The cubic root of 4239872 is about 161.8518179610.

The spelling of 4239872 in words is "four million, two hundred thirty-nine thousand, eight hundred seventy-two".