439994 has 8 divisors (see below), whose sum is σ = 698868. Its totient is φ = 207040.

The previous prime is 439991. The next prime is 440009. The reversal of 439994 is 499934.

It can be written as a sum of positive squares in 2 ways, for example, as 405769 + 34225 = 637^2 + 185^2 .

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 (439991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6437 + ... + 6504.

2⁴³⁹⁹⁹⁴ is an apocalyptic number.

439994 is a deficient number, since it is larger than the sum of its proper divisors (258874).

439994 is a wasteful number, since it uses less digits than its factorization.

439994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12960.

The product of its digits is 34992, while the sum is 38.

The square root of 439994 is about 663.3204353855. The cubic root of 439994 is about 76.0587034907.

The spelling of 439994 in words is "four hundred thirty-nine thousand, nine hundred ninety-four".