499209617 has 2 divisors, whose sum is σ = 499209618. Its totient is φ = 499209616.

The previous prime is 499209541. The next prime is 499209619. The reversal of 499209617 is 716902994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 496220176 + 2989441 = 22276^2 + 1729^2 .

It is a cyclic number.

It is not a de Polignac number, because 499209617 - 2¹⁶ = 499144081 is a prime.

Together with 499209619, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (499209619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249604808 + 249604809.

It is an arithmetic number, because the mean of its divisors is an integer number (249604809).

Almost surely, 2^499209617 is an apocalyptic number.

It is an amenable number.

499209617 is a deficient number, since it is larger than the sum of its proper divisors (1).

499209617 is an equidigital number, since it uses as much as digits as its factorization.

499209617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 499209617 is about 22342.9992838920. Note that the first 3 decimals coincide. The cubic root of 499209617 is about 793.2820871534.

The spelling of 499209617 in words is "four hundred ninety-nine million, two hundred nine thousand, six hundred seventeen".