499229309 has 2 divisors, whose sum is σ = 499229310. Its totient is φ = 499229308.

The previous prime is 499229303. The next prime is 499229317. The reversal of 499229309 is 903922994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 254306809 + 244922500 = 15947^2 + 15650^2 .

It is a cyclic number.

It is not a de Polignac number, because 499229309 - 2¹⁶ = 499163773 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499229303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249614654 + 249614655.

It is an arithmetic number, because the mean of its divisors is an integer number (249614655).

Almost surely, 2^499229309 is an apocalyptic number.

It is an amenable number.

499229309 is a deficient number, since it is larger than the sum of its proper divisors (1).

499229309 is an equidigital number, since it uses as much as digits as its factorization.

499229309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 499229309 is about 22343.4399544922. The cubic root of 499229309 is about 793.2925177120.

The spelling of 499229309 in words is "four hundred ninety-nine million, two hundred twenty-nine thousand, three hundred nine".