440839 has 8 divisors (see below), whose sum is σ = 511488. Its totient is φ = 372120.

The previous prime is 440831. The next prime is 440849. The reversal of 440839 is 938044.

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

It is not a de Polignac number, because 440839 - 2³ = 440831 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 (440831) 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, 54 + ... + 940.

It is an arithmetic number, because the mean of its divisors is an integer number (63936).

2⁴⁴⁰⁸³⁹ is an apocalyptic number.

440839 is a deficient number, since it is larger than the sum of its proper divisors (70649).

440839 is an equidigital number, since it uses as much as digits as its factorization.

440839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 440839 is about 663.9570769259. The cubic root of 440839 is about 76.1073621129.

The spelling of 440839 in words is "four hundred forty thousand, eight hundred thirty-nine".