5440000019 has 2 divisors, whose sum is σ = 5440000020. Its totient is φ = 5440000018.

The previous prime is 5439999989. The next prime is 5440000121. The reversal of 5440000019 is 9100000445.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5440000019 is a prime.

It is a super-2 number, since 2×5440000019² = 59187200413440000722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5439999949 and 5440000003.

It is not a weakly prime, because it can be changed into another prime (5440000519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2720000009 + 2720000010.

It is an arithmetic number, because the mean of its divisors is an integer number (2720000010).

Almost surely, 2^5440000019 is an apocalyptic number.

5440000019 is a deficient number, since it is larger than the sum of its proper divisors (1).

5440000019 is an equidigital number, since it uses as much as digits as its factorization.

5440000019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 5440000019 is about 73756.3557871456. The cubic root of 5440000019 is about 1758.7318709108.

The spelling of 5440000019 in words is "five billion, four hundred forty million, nineteen", and thus it is an aban number.