509489093 has 2 divisors, whose sum is σ = 509489094. Its totient is φ = 509489092.

The previous prime is 509489059. The next prime is 509489143. The reversal of 509489093 is 390984905.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 479040769 + 30448324 = 21887^2 + 5518^2 .

It is a cyclic number.

It is not a de Polignac number, because 509489093 - 2¹⁶ = 509423557 is a 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 (509489033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254744546 + 254744547.

It is an arithmetic number, because the mean of its divisors is an integer number (254744547).

Almost surely, 2^509489093 is an apocalyptic number.

It is an amenable number.

509489093 is a deficient number, since it is larger than the sum of its proper divisors (1).

509489093 is an equidigital number, since it uses as much as digits as its factorization.

509489093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 509489093 is about 22571.8650757973. The cubic root of 509489093 is about 798.6900922854.

The spelling of 509489093 in words is "five hundred nine million, four hundred eighty-nine thousand, ninety-three".