499984999 has 4 divisors (see below), whose sum is σ = 504657864. Its totient is φ = 495312136.

The previous prime is 499984997. The next prime is 499985023. The reversal of 499984999 is 999489994.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 499984999 - 2¹ = 499984997 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 (499984993) 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 3 ways as a sum of consecutive naturals, for example, 2336272 + ... + 2336485.

It is an arithmetic number, because the mean of its divisors is an integer number (126164466).

Almost surely, 2^499984999 is an apocalyptic number.

499984999 is a deficient number, since it is larger than the sum of its proper divisors (4672865).

499984999 is a wasteful number, since it uses less digits than its factorization.

499984999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4672864.

The product of its digits is 68024448, while the sum is 70.

The square root of 499984999 is about 22360.3443399246. The cubic root of 499984999 is about 793.6925883703.

It can be divided in two parts, 4999 and 84999, that added together give a palindrome (89998).

The spelling of 499984999 in words is "four hundred ninety-nine million, nine hundred eighty-four thousand, nine hundred ninety-nine".