999999499 has 8 divisors (see below), whose sum is σ = 1016986880. Its totient is φ = 983152296.

The previous prime is 999999491. The next prime is 999999503. The reversal of 999999499 is 994999999.

999999499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 999999499 - 2³ = 999999491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999999491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20607 + ... + 49240.

It is an arithmetic number, because the mean of its divisors is an integer number (127123360).

Almost surely, 2^999999499 is an apocalyptic number.

999999499 is a deficient number, since it is larger than the sum of its proper divisors (16987381).

999999499 is a wasteful number, since it uses less digits than its factorization.

999999499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70089.

The product of its digits is 172186884, while the sum is 76.

The square root of 999999499 is about 31622.7686801773. The cubic root of 999999499 is about 999.9998330000. Note that the first 3 decimals are identical.

The spelling of 999999499 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, four hundred ninety-nine".