4388239 has 4 divisors (see below), whose sum is σ = 4579056. Its totient is φ = 4197424.

The previous prime is 4388207. The next prime is 4388257. The reversal of 4388239 is 9328834.

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

It is a cyclic number.

It is not a de Polignac number, because 4388239 - 2⁵ = 4388207 is a prime.

It is a super-2 number, since 2×4388239² = 38513283042242, which contains 22 as substring.

It is a Duffinian number.

4388239 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4388198 and 4388207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4388269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95374 + ... + 95419.

It is an arithmetic number, because the mean of its divisors is an integer number (1144764).

Almost surely, 2^4388239 is an apocalyptic number.

4388239 is a deficient number, since it is larger than the sum of its proper divisors (190817).

4388239 is a wasteful number, since it uses less digits than its factorization.

4388239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190816.

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

The square root of 4388239 is about 2094.8124021019. The cubic root of 4388239 is about 163.7181232747.

The spelling of 4388239 in words is "four million, three hundred eighty-eight thousand, two hundred thirty-nine".