499700009 has 2 divisors, whose sum is σ = 499700010. Its totient is φ = 499700008.

The previous prime is 499699999. The next prime is 499700011. The reversal of 499700009 is 900007994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 350737984 + 148962025 = 18728^2 + 12205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499700009 is a prime.

Together with 499700011, 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 (499700039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249850004 + 249850005.

It is an arithmetic number, because the mean of its divisors is an integer number (249850005).

Almost surely, 2^499700009 is an apocalyptic number.

It is an amenable number.

499700009 is a deficient number, since it is larger than the sum of its proper divisors (1).

499700009 is an equidigital number, since it uses as much as digits as its factorization.

499700009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 499700009 is about 22353.9707658393. The cubic root of 499700009 is about 793.5417588844.

The spelling of 499700009 in words is "four hundred ninety-nine million, seven hundred thousand, nine".