439679 has 8 divisors (see below), whose sum is σ = 470640. Its totient is φ = 409536.

The previous prime is 439667. The next prime is 439687. The reversal of 439679 is 976934.

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 439679 - 2¹² = 435583 is a prime.

It is a Duffinian number.

It is a congruent 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, 1229 + ... + 1545.

It is an arithmetic number, because the mean of its divisors is an integer number (58830).

2⁴³⁹⁶⁷⁹ is an apocalyptic number.

439679 is a deficient number, since it is larger than the sum of its proper divisors (30961).

439679 is a wasteful number, since it uses less digits than its factorization.

439679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409.

The product of its digits is 40824, while the sum is 38.

The square root of 439679 is about 663.0829510702. The cubic root of 439679 is about 76.0405485376.

The spelling of 439679 in words is "four hundred thirty-nine thousand, six hundred seventy-nine".