493966589 has 2 divisors, whose sum is σ = 493966590. Its totient is φ = 493966588.

The previous prime is 493966567. The next prime is 493966597. The reversal of 493966589 is 985669394.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 363207364 + 130759225 = 19058^2 + 11435^2 .

It is a cyclic number.

It is not a de Polignac number, because 493966589 - 2²⁴ = 477189373 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (493966189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246983294 + 246983295.

It is an arithmetic number, because the mean of its divisors is an integer number (246983295).

Almost surely, 2^493966589 is an apocalyptic number.

It is an amenable number.

493966589 is a deficient number, since it is larger than the sum of its proper divisors (1).

493966589 is an equidigital number, since it uses as much as digits as its factorization.

493966589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12597120, while the sum is 59.

The square root of 493966589 is about 22225.3591422051. The cubic root of 493966589 is about 790.4951171791.

The spelling of 493966589 in words is "four hundred ninety-three million, nine hundred sixty-six thousand, five hundred eighty-nine".