499999499999 has 24 divisors (see below), whose sum is σ = 525428320896. Its totient is φ = 475259400000.

The previous prime is 499999499969. The next prime is 499999500041. The reversal of 499999499999 is 999994999994.

It is not a de Polignac number, because 499999499999 - 2²⁸ = 499731064543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499999499959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50494949 + ... + 50504849.

It is an arithmetic number, because the mean of its divisors is an integer number (21892846704).

Almost surely, 2^499999499999 is an apocalyptic number.

499999499999 is a deficient number, since it is larger than the sum of its proper divisors (25428820897).

499999499999 is a wasteful number, since it uses less digits than its factorization.

499999499999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10287 (or 10160 counting only the distinct ones).

The product of its digits is 55788550416, while the sum is 98.

The spelling of 499999499999 in words is "four hundred ninety-nine billion, nine hundred ninety-nine million, four hundred ninety-nine thousand, nine hundred ninety-nine".