4400133641 has 2 divisors, whose sum is σ = 4400133642. Its totient is φ = 4400133640.

The previous prime is 4400133637. The next prime is 4400133671. The reversal of 4400133641 is 1463310044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3480528016 + 919605625 = 58996^2 + 30325^2 .

It is a cyclic number.

It is not a de Polignac number, because 4400133641 - 2² = 4400133637 is a prime.

It is a super-2 number, since 2×4400133641² = 38722352117319833762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4400133641.

It is not a weakly prime, because it can be changed into another prime (4400133671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2200066820 + 2200066821.

It is an arithmetic number, because the mean of its divisors is an integer number (2200066821).

Almost surely, 2^4400133641 is an apocalyptic number.

It is an amenable number.

4400133641 is a deficient number, since it is larger than the sum of its proper divisors (1).

4400133641 is an equidigital number, since it uses as much as digits as its factorization.

4400133641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 4400133641 is about 66333.5031563990. The cubic root of 4400133641 is about 1638.6591311718.

Adding to 4400133641 its reverse (1463310044), we get a palindrome (5863443685).

The spelling of 4400133641 in words is "four billion, four hundred million, one hundred thirty-three thousand, six hundred forty-one".