5440638211 has 2 divisors, whose sum is σ = 5440638212. Its totient is φ = 5440638210.

The previous prime is 5440638193. The next prime is 5440638223. The reversal of 5440638211 is 1128360445.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5440638211 - 2⁷ = 5440638083 is a prime.

It is not a weakly prime, because it can be changed into another prime (5440638271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2720319105 + 2720319106.

It is an arithmetic number, because the mean of its divisors is an integer number (2720319106).

Almost surely, 2^5440638211 is an apocalyptic number.

5440638211 is a deficient number, since it is larger than the sum of its proper divisors (1).

5440638211 is an equidigital number, since it uses as much as digits as its factorization.

5440638211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 5440638211 is about 73760.6820128448. The cubic root of 5440638211 is about 1758.8006432587.

Adding to 5440638211 its reverse (1128360445), we get a palindrome (6568998656).

The spelling of 5440638211 in words is "five billion, four hundred forty million, six hundred thirty-eight thousand, two hundred eleven".