44404001 has 4 divisors (see below), whose sum is σ = 44417604. Its totient is φ = 44390400.

The previous prime is 44403991. The next prime is 44404013. The reversal of 44404001 is 10040444.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 24512401 + 19891600 = 4951^2 + 4460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44404001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44404081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1361 + ... + 9521.

It is an arithmetic number, because the mean of its divisors is an integer number (11104401).

Almost surely, 2^44404001 is an apocalyptic number.

44404001 is the 5441-st pentagonal number.

It is an amenable number.

44404001 is a deficient number, since it is larger than the sum of its proper divisors (13603).

44404001 is an equidigital number, since it uses as much as digits as its factorization.

44404001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13602.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 44404001 is about 6663.6327179700. The cubic root of 44404001 is about 354.1120465218.

Adding to 44404001 its reverse (10040444), we get a palindrome (54444445).

The spelling of 44404001 in words is "forty-four million, four hundred four thousand, one".