439388 has 6 divisors (see below), whose sum is σ = 768936. Its totient is φ = 219692.

The previous prime is 439381. The next prime is 439409. The reversal of 439388 is 883934.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 439388.

It is not an unprimeable number, because it can be changed into a prime (439381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54920 + ... + 54927.

It is an arithmetic number, because the mean of its divisors is an integer number (128156).

2⁴³⁹³⁸⁸ is an apocalyptic number.

It is an amenable number.

439388 is a deficient number, since it is larger than the sum of its proper divisors (329548).

439388 is a wasteful number, since it uses less digits than its factorization.

439388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109851 (or 109849 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 439388 is about 662.8634851913. The cubic root of 439388 is about 76.0237691120.

The spelling of 439388 in words is "four hundred thirty-nine thousand, three hundred eighty-eight".