499749999 has 16 divisors (see below), whose sum is σ = 779235072. Its totient is φ = 278929728.

The previous prime is 499749967. The next prime is 499750007. The reversal of 499749999 is 999947994.

It is not a de Polignac number, because 499749999 - 2⁵ = 499749967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499749959) 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 15 ways as a sum of consecutive naturals, for example, 275814 + ... + 277619.

It is an arithmetic number, because the mean of its divisors is an integer number (48702192).

Almost surely, 2^499749999 is an apocalyptic number.

499749999 is a deficient number, since it is larger than the sum of its proper divisors (279485073).

499749999 is a wasteful number, since it uses less digits than its factorization.

499749999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553486.

The product of its digits is 59521392, while the sum is 69.

The square root of 499749999 is about 22355.0888837419. The cubic root of 499749999 is about 793.5682199804.

The spelling of 499749999 in words is "four hundred ninety-nine million, seven hundred forty-nine thousand, nine hundred ninety-nine".