500266649 has 2 divisors, whose sum is σ = 500266650. Its totient is φ = 500266648.

The previous prime is 500266609. The next prime is 500266651. The reversal of 500266649 is 946662005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 493728400 + 6538249 = 22220^2 + 2557^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-500266649 is a prime.

It is a Sophie Germain prime.

Together with 500266651, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (500266609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250133324 + 250133325.

It is an arithmetic number, because the mean of its divisors is an integer number (250133325).

Almost surely, 2^500266649 is an apocalyptic number.

It is an amenable number.

500266649 is a deficient number, since it is larger than the sum of its proper divisors (1).

500266649 is an equidigital number, since it uses as much as digits as its factorization.

500266649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 500266649 is about 22366.6414331701. The cubic root of 500266649 is about 793.8415938777.

The spelling of 500266649 in words is "five hundred million, two hundred sixty-six thousand, six hundred forty-nine".