499656589 has 2 divisors, whose sum is σ = 499656590. Its totient is φ = 499656588.

The previous prime is 499656583. The next prime is 499656601. The reversal of 499656589 is 985656994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 445927689 + 53728900 = 21117^2 + 7330^2 .

It is a cyclic number.

It is not a de Polignac number, because 499656589 - 2⁷ = 499656461 is a prime.

It is a super-2 number, since 2×499656589² = 499313413862229842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499656583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249828294 + 249828295.

It is an arithmetic number, because the mean of its divisors is an integer number (249828295).

Almost surely, 2^499656589 is an apocalyptic number.

It is an amenable number.

499656589 is a deficient number, since it is larger than the sum of its proper divisors (1).

499656589 is an equidigital number, since it uses as much as digits as its factorization.

499656589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20995200, while the sum is 61.

The square root of 499656589 is about 22352.9995526328. Note that the first 3 decimals coincide. The cubic root of 499656589 is about 793.5187740398.

The spelling of 499656589 in words is "four hundred ninety-nine million, six hundred fifty-six thousand, five hundred eighty-nine".