499999311 has 20 divisors (see below), whose sum is σ = 853615312. Its totient is φ = 285713568.

The previous prime is 499999303. The next prime is 499999319. The reversal of 499999311 is 113999994.

It is an interprime number because it is at equal distance from previous prime (499999303) and next prime (499999319).

It is not a de Polignac number, because 499999311 - 2³ = 499999303 is a prime.

It is a super-2 number, since 2×499999311² = 499998622000949442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499999319) 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 in 19 ways as a sum of consecutive naturals, for example, 440350 + ... + 441483.

Almost surely, 2^499999311 is an apocalyptic number.

499999311 is a deficient number, since it is larger than the sum of its proper divisors (353616001).

499999311 is an equidigital number, since it uses as much as digits as its factorization.

499999311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881852 (or 881843 counting only the distinct ones).

The product of its digits is 708588, while the sum is 54.

The square root of 499999311 is about 22360.6643684842. The cubic root of 499999311 is about 793.7001614108.

The spelling of 499999311 in words is "four hundred ninety-nine million, nine hundred ninety-nine thousand, three hundred eleven".