499786491 has 8 divisors (see below), whose sum is σ = 684392464. Its totient is φ = 324185760.

The previous prime is 499786487. The next prime is 499786501. The reversal of 499786491 is 194687994.

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

It is not a de Polignac number, because 499786491 - 2² = 499786487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499786471) 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 7 ways as a sum of consecutive naturals, for example, 2251180 + ... + 2251401.

It is an arithmetic number, because the mean of its divisors is an integer number (85549058).

Almost surely, 2^499786491 is an apocalyptic number.

499786491 is a deficient number, since it is larger than the sum of its proper divisors (184605973).

499786491 is a wasteful number, since it uses less digits than its factorization.

499786491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4502621.

The product of its digits is 3919104, while the sum is 57.

The square root of 499786491 is about 22355.9050588430. The cubic root of 499786491 is about 793.5875350958.

The spelling of 499786491 in words is "four hundred ninety-nine million, seven hundred eighty-six thousand, four hundred ninety-one".