439144 has 16 divisors (see below), whose sum is σ = 872100. Its totient is φ = 206592.

The previous prime is 439141. The next prime is 439157. The reversal of 439144 is 441934.

439144 = T₃₇ + T₃₈ + ... + T₁₃₈.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 438244 + 900 = 662^2 + 30^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (439141) 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, 1479 + ... + 1750.

2⁴³⁹¹⁴⁴ is an apocalyptic number.

It is an amenable number.

439144 is a deficient number, since it is larger than the sum of its proper divisors (432956).

439144 is a wasteful number, since it uses less digits than its factorization.

439144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3252 (or 3248 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 439144 is about 662.6794096696. The cubic root of 439144 is about 76.0096940543.

The spelling of 439144 in words is "four hundred thirty-nine thousand, one hundred forty-four".