439491 has 16 divisors (see below), whose sum is σ = 645120. Its totient is φ = 264480.

The previous prime is 439471. The next prime is 439493. The reversal of 439491 is 194934.

It is not a de Polignac number, because 439491 - 2⁵ = 439459 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (439493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2206 + ... + 2396.

It is an arithmetic number, because the mean of its divisors is an integer number (40320).

2⁴³⁹⁴⁹¹ is an apocalyptic number.

439491 is a deficient number, since it is larger than the sum of its proper divisors (205629).

439491 is a wasteful number, since it uses less digits than its factorization.

439491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266.

The product of its digits is 3888, while the sum is 30.

The square root of 439491 is about 662.9411738608. The cubic root of 439491 is about 76.0297090682.

The spelling of 439491 in words is "four hundred thirty-nine thousand, four hundred ninety-one".