439408 has 20 divisors (see below), whose sum is σ = 881640. Its totient is φ = 211904.

The previous prime is 439381. The next prime is 439409. The reversal of 439408 is 804934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439409) by changing a digit.

439408 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10 + ... + 937.

It is an arithmetic number, because the mean of its divisors is an integer number (44082).

2⁴³⁹⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

439408 is an abundant number, since it is smaller than the sum of its proper divisors (442232).

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

439408 is a wasteful number, since it uses less digits than its factorization.

439408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 439408 is about 662.8785710822. The cubic root of 439408 is about 76.0249225742.

The spelling of 439408 in words is "four hundred thirty-nine thousand, four hundred eight".