44001 has 6 divisors (see below), whose sum is σ = 63570. Its totient is φ = 29328.

The previous prime is 43997. The next prime is 44017. The reversal of 44001 is 10044.

It can be written as a sum of positive squares in only one way, i.e., 40401 + 3600 = 201^2 + 60^2 .

It is not a de Polignac number, because 44001 - 2^{2} = 43997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 4889 = 44001 / (4 + 4 + 0 + 0 + 1).

It is a Curzon number.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2436 + ... + 2453.

It is an arithmetic number, because the mean of its divisors is an integer number (10595).

2^{44001} is an apocalyptic number.

It is an amenable number.

44001 is a deficient number, since it is larger than the sum of its proper divisors (19569).

44001 is a wasteful number, since it uses less digits than its factorization.

44001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4895 (or 4892 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 44001 is about 209.7641532770. The cubic root of 44001 is about 35.3037508019.

Adding to 44001 its reverse (10044), we get a palindrome (54045).

It can be divided in two parts, 4 and 4001, that added together give a triangular number (4005 = T_{89}).

The spelling of 44001 in words is "forty-four thousand, one", and thus it is an iban number.

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