509489143 has 2 divisors, whose sum is σ = 509489144. Its totient is φ = 509489142.

The previous prime is 509489093. The next prime is 509489171. The reversal of 509489143 is 341984905.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 509489143 - 2¹⁷ = 509358071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 509489143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509489243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254744571 + 254744572.

It is an arithmetic number, because the mean of its divisors is an integer number (254744572).

Almost surely, 2^509489143 is an apocalyptic number.

509489143 is a deficient number, since it is larger than the sum of its proper divisors (1).

509489143 is an equidigital number, since it uses as much as digits as its factorization.

509489143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 509489143 is about 22571.8661833708. The cubic root of 509489143 is about 798.6901184125.

The spelling of 509489143 in words is "five hundred nine million, four hundred eighty-nine thousand, one hundred forty-three".