439406 has 8 divisors (see below), whose sum is σ = 719064. Its totient is φ = 199720.

The previous prime is 439381. The next prime is 439409. The reversal of 439406 is 604934.

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

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9965 + ... + 10008.

It is an arithmetic number, because the mean of its divisors is an integer number (89883).

2⁴³⁹⁴⁰⁶ is an apocalyptic number.

439406 is a deficient number, since it is larger than the sum of its proper divisors (279658).

439406 is a wasteful number, since it uses less digits than its factorization.

439406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19986.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 439406 is about 662.8770625086. The cubic root of 439406 is about 76.0248072296.

It can be divided in two parts, 43 and 9406, that added together give a palindrome (9449).

The spelling of 439406 in words is "four hundred thirty-nine thousand, four hundred six".