439645 has 8 divisors (see below), whose sum is σ = 550656. Its totient is φ = 336336.

The previous prime is 439639. The next prime is 439661. The reversal of 439645 is 546934.

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 439645 - 2⁵ = 439613 is a prime.

It is a d-powerful number, because it can be written as 4 + 3¹¹ + 6³ + 9 + 4⁹ + 5³ .

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1797 + ... + 2026.

It is an arithmetic number, because the mean of its divisors is an integer number (68832).

2⁴³⁹⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

439645 is a deficient number, since it is larger than the sum of its proper divisors (111011).

439645 is a wasteful number, since it uses less digits than its factorization.

439645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3851.

The product of its digits is 12960, while the sum is 31.

The square root of 439645 is about 663.0573127566. The cubic root of 439645 is about 76.0385884369.

The spelling of 439645 in words is "four hundred thirty-nine thousand, six hundred forty-five".