439489 has 4 divisors (see below), whose sum is σ = 462640. Its totient is φ = 416340.

The previous prime is 439471. The next prime is 439493. The reversal of 439489 is 984934.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 984934 = 2 ⋅492467.

It is a cyclic number.

It is not a de Polignac number, because 439489 - 2¹³ = 431297 is a prime.

It is a super-2 number, since 2×439489² = 386301162242, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

439489 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (439409) 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, 11547 + ... + 11584.

It is an arithmetic number, because the mean of its divisors is an integer number (115660).

2⁴³⁹⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

439489 is a deficient number, since it is larger than the sum of its proper divisors (23151).

439489 is a wasteful number, since it uses less digits than its factorization.

439489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23150.

The product of its digits is 31104, while the sum is 37.

The square root of 439489 is about 662.9396654297. The cubic root of 439489 is about 76.0295937381.

It can be divided in two parts, 4 and 39489, that added together give a palindrome (39493).

The spelling of 439489 in words is "four hundred thirty-nine thousand, four hundred eighty-nine".