44005 has 8 divisors (see below), whose sum is σ = 56952. Its totient is φ = 32448.

The previous prime is 43997. The next prime is 44017. The reversal of 44005 is 50044.

It can be written as a sum of positive squares in 4 ways, for example, as 9409 + 34596 = 97^2 + 186^2 .

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

It is not a de Polignac number, because 44005 - 2³ = 43997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 274 + ... + 403.

It is an arithmetic number, because the mean of its divisors is an integer number (7119).

2⁴⁴⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

44005 is a deficient number, since it is larger than the sum of its proper divisors (12947).

44005 is a wasteful number, since it uses less digits than its factorization.

44005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695.

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 44005 is about 209.7736875778. The cubic root of 44005 is about 35.3048205558.

Adding to 44005 its reverse (50044), we get a palindrome (94049).

The spelling of 44005 in words is "forty-four thousand, five".