439671 has 16 divisors (see below), whose sum is σ = 640224. Its totient is φ = 267264.

The previous prime is 439667. The next prime is 439687. The reversal of 439671 is 176934.

Added to its reverse (176934) it gives a triangular number (616605 = T₁₁₁₀).

It is a happy number.

It is not a de Polignac number, because 439671 - 2² = 439667 is a prime.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1771 + ... + 2003.

It is an arithmetic number, because the mean of its divisors is an integer number (40014).

2⁴³⁹⁶⁷¹ is an apocalyptic number.

439671 is a deficient number, since it is larger than the sum of its proper divisors (200553).

439671 is a wasteful number, since it uses less digits than its factorization.

439671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290.

The product of its digits is 4536, while the sum is 30.

The square root of 439671 is about 663.0769186150. The cubic root of 439671 is about 76.0400873465.

Adding to 439671 its reverse (176934), we get a triangular number (616605 = T₁₁₁₀).

The spelling of 439671 in words is "four hundred thirty-nine thousand, six hundred seventy-one".