499809111 has 8 divisors (see below), whose sum is σ = 671207040. Its totient is φ = 330808632.

The previous prime is 499809103. The next prime is 499809127. The reversal of 499809111 is 111908994.

It is a happy number.

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

It is not a de Polignac number, because 499809111 - 2³ = 499809103 is a prime.

It is a super-2 number, since 2×499809111² = 499618294877220642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499809161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598875 + ... + 599708.

It is an arithmetic number, because the mean of its divisors is an integer number (83900880).

Almost surely, 2^499809111 is an apocalyptic number.

499809111 is a deficient number, since it is larger than the sum of its proper divisors (171397929).

499809111 is a wasteful number, since it uses less digits than its factorization.

499809111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198725.

The product of its (nonzero) digits is 23328, while the sum is 42.

The square root of 499809111 is about 22356.4109597225. The cubic root of 499809111 is about 793.5995073276.

The spelling of 499809111 in words is "four hundred ninety-nine million, eight hundred nine thousand, one hundred eleven".