4393439 has 8 divisors (see below), whose sum is σ = 4553472. Its totient is φ = 4236120.

The previous prime is 4393423. The next prime is 4393447. The reversal of 4393439 is 9343934.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4393439 - 2⁴ = 4393423 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4393399 and 4393408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4393489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2954 + ... + 4184.

It is an arithmetic number, because the mean of its divisors is an integer number (569184).

Almost surely, 2^4393439 is an apocalyptic number.

4393439 is a deficient number, since it is larger than the sum of its proper divisors (160033).

4393439 is a wasteful number, since it uses less digits than its factorization.

4393439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357.

The product of its digits is 34992, while the sum is 35.

The square root of 4393439 is about 2096.0531958898. The cubic root of 4393439 is about 163.7827656205.

The spelling of 4393439 in words is "four million, three hundred ninety-three thousand, four hundred thirty-nine".