5645355439 has 2 divisors, whose sum is σ = 5645355440. Its totient is φ = 5645355438.

The previous prime is 5645355437. The next prime is 5645355493. The reversal of 5645355439 is 9345535465.

Together with next prime (5645355493) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5645355439 - 2¹ = 5645355437 is a prime.

Together with 5645355437, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 5645355392 and 5645355401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5645355431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822677719 + 2822677720.

It is an arithmetic number, because the mean of its divisors is an integer number (2822677720).

Almost surely, 2^5645355439 is an apocalyptic number.

5645355439 is a deficient number, since it is larger than the sum of its proper divisors (1).

5645355439 is an equidigital number, since it uses as much as digits as its factorization.

5645355439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860000, while the sum is 49.

The square root of 5645355439 is about 75135.5803797375. The cubic root of 5645355439 is about 1780.5893178720.

The spelling of 5645355439 in words is "five billion, six hundred forty-five million, three hundred fifty-five thousand, four hundred thirty-nine".