4400813 has 2 divisors, whose sum is σ = 4400814. Its totient is φ = 4400812.

The previous prime is 4400801. The next prime is 4400819. The reversal of 4400813 is 3180044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4380649 + 20164 = 2093^2 + 142^2 .

It is a cyclic number.

It is not a de Polignac number, because 4400813 - 2¹⁰ = 4399789 is a prime.

4400813 is a modest number, since divided by 813 gives 44 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4400819) 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 as a sum of consecutive naturals, namely, 2200406 + 2200407.

It is an arithmetic number, because the mean of its divisors is an integer number (2200407).

Almost surely, 2^4400813 is an apocalyptic number.

It is an amenable number.

4400813 is a deficient number, since it is larger than the sum of its proper divisors (1).

4400813 is an equidigital number, since it uses as much as digits as its factorization.

4400813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4400813 is about 2097.8114786606. The cubic root of 4400813 is about 163.8743460470.

Adding to 4400813 its reverse (3180044), we get a palindrome (7580857).

The spelling of 4400813 in words is "four million, four hundred thousand, eight hundred thirteen".