499965569 has 2 divisors, whose sum is σ = 499965570. Its totient is φ = 499965568.

The previous prime is 499965527. The next prime is 499965607. The reversal of 499965569 is 965569994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 481363600 + 18601969 = 21940^2 + 4313^2 .

It is a cyclic number.

It is not a de Polignac number, because 499965569 - 2⁸ = 499965313 is a prime.

It is a super-2 number, since 2×499965569² = 499931140370987522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (499961569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249982784 + 249982785.

It is an arithmetic number, because the mean of its divisors is an integer number (249982785).

Almost surely, 2^499965569 is an apocalyptic number.

It is an amenable number.

499965569 is a deficient number, since it is larger than the sum of its proper divisors (1).

499965569 is an equidigital number, since it uses as much as digits as its factorization.

499965569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23619600, while the sum is 62.

The square root of 499965569 is about 22359.9098611779. The cubic root of 499965569 is about 793.6823069640.

The spelling of 499965569 in words is "four hundred ninety-nine million, nine hundred sixty-five thousand, five hundred sixty-nine".