439649 has 8 divisors (see below), whose sum is σ = 506688. Its totient is φ = 373680.

The previous prime is 439639. The next prime is 439661. The reversal of 439649 is 946934.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 439649 - 2¹² = 435553 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (439639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1094 + ... + 1440.

It is an arithmetic number, because the mean of its divisors is an integer number (63336).

2⁴³⁹⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

439649 is a deficient number, since it is larger than the sum of its proper divisors (67039).

439649 is a wasteful number, since it uses less digits than its factorization.

439649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535.

The product of its digits is 23328, while the sum is 35.

The square root of 439649 is about 663.0603290802. The cubic root of 439649 is about 76.0388190423.

The spelling of 439649 in words is "four hundred thirty-nine thousand, six hundred forty-nine".