4400641 has 6 divisors (see below), whose sum is σ = 5119170. Its totient is φ = 3771936.

The previous prime is 4400639. The next prime is 4400687. The reversal of 4400641 is 1460044.

It can be written as a sum of positive squares in only one way, i.e., 4322241 + 78400 = 2079^2 + 280^2 .

It is not a de Polignac number, because 4400641 - 2¹ = 4400639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4400621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44856 + ... + 44953.

It is an arithmetic number, because the mean of its divisors is an integer number (853195).

Almost surely, 2^4400641 is an apocalyptic number.

It is an amenable number.

4400641 is a deficient number, since it is larger than the sum of its proper divisors (718529).

4400641 is an equidigital number, since it uses as much as digits as its factorization.

4400641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89823 (or 89816 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 4400641 is about 2097.7704831559. The cubic root of 4400641 is about 163.8722110812.

Adding to 4400641 its reverse (1460044), we get a palindrome (5860685).

It can be divided in two parts, 4400 and 641, that added together give a square (5041 = 71²).

The spelling of 4400641 in words is "four million, four hundred thousand, six hundred forty-one".