509493443 has 2 divisors, whose sum is σ = 509493444. Its totient is φ = 509493442.

The previous prime is 509493437. The next prime is 509493449. The reversal of 509493443 is 344394905.

It is a balanced prime because it is at equal distance from previous prime (509493437) and next prime (509493449).

It is a cyclic number.

It is not a de Polignac number, because 509493443 - 2⁴ = 509493427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 509493443.

It is not a weakly prime, because it can be changed into another prime (509493449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254746721 + 254746722.

It is an arithmetic number, because the mean of its divisors is an integer number (254746722).

Almost surely, 2^509493443 is an apocalyptic number.

509493443 is a deficient number, since it is larger than the sum of its proper divisors (1).

509493443 is an equidigital number, since it uses as much as digits as its factorization.

509493443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 509493443 is about 22571.9614344877. The cubic root of 509493443 is about 798.6923653415.

The spelling of 509493443 in words is "five hundred nine million, four hundred ninety-three thousand, four hundred forty-three".