499610509 has 2 divisors, whose sum is σ = 499610510. Its totient is φ = 499610508.

The previous prime is 499610443. The next prime is 499610533. The reversal of 499610509 is 905016994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 445632100 + 53978409 = 21110^2 + 7347^2 .

It is a cyclic number.

It is not a de Polignac number, because 499610509 - 2⁷ = 499610381 is a prime.

It is a super-2 number, since 2×499610509² = 499221321406478162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499610009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249805254 + 249805255.

It is an arithmetic number, because the mean of its divisors is an integer number (249805255).

Almost surely, 2^499610509 is an apocalyptic number.

It is an amenable number.

499610509 is a deficient number, since it is larger than the sum of its proper divisors (1).

499610509 is an equidigital number, since it uses as much as digits as its factorization.

499610509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 499610509 is about 22351.9687947169. The cubic root of 499610509 is about 793.4943796390.

The spelling of 499610509 in words is "four hundred ninety-nine million, six hundred ten thousand, five hundred nine".