5643479 has 2 divisors, whose sum is σ = 5643480. Its totient is φ = 5643478.

The previous prime is 5643427. The next prime is 5643503. The reversal of 5643479 is 9743465.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5643479 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5642479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2821739 + 2821740.

It is an arithmetic number, because the mean of its divisors is an integer number (2821740).

Almost surely, 2^5643479 is an apocalyptic number.

5643479 is a deficient number, since it is larger than the sum of its proper divisors (1).

5643479 is an equidigital number, since it uses as much as digits as its factorization.

5643479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 5643479 is about 2375.6007661221. The cubic root of 5643479 is about 178.0392014825.

The spelling of 5643479 in words is "five million, six hundred forty-three thousand, four hundred seventy-nine".