499864191 has 16 divisors (see below), whose sum is σ = 686035584. Its totient is φ = 323508384.

The previous prime is 499864187. The next prime is 499864199. The reversal of 499864191 is 191468994.

It is not a de Polignac number, because 499864191 - 2² = 499864187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499864199) 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 15 ways as a sum of consecutive naturals, for example, 47016 + ... + 56658.

It is an arithmetic number, because the mean of its divisors is an integer number (42877224).

Almost surely, 2^499864191 is an apocalyptic number.

499864191 is a deficient number, since it is larger than the sum of its proper divisors (186171393).

499864191 is a wasteful number, since it uses less digits than its factorization.

499864191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10150.

The product of its digits is 559872, while the sum is 51.

The square root of 499864191 is about 22357.6427871992. The cubic root of 499864191 is about 793.6286583604.

The spelling of 499864191 in words is "four hundred ninety-nine million, eight hundred sixty-four thousand, one hundred ninety-one".