499126805 has 16 divisors (see below), whose sum is σ = 613008000. Its totient is φ = 390035520.

The previous prime is 499126799. The next prime is 499126813. The reversal of 499126805 is 508621994.

It is not a de Polignac number, because 499126805 - 2⁶ = 499126741 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32246 + ... + 45144.

It is an arithmetic number, because the mean of its divisors is an integer number (38313000).

Almost surely, 2^499126805 is an apocalyptic number.

499126805 is the 12899-th octagonal number.

It is an amenable number.

499126805 is a deficient number, since it is larger than the sum of its proper divisors (113881195).

499126805 is a wasteful number, since it uses less digits than its factorization.

499126805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13084.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 499126805 is about 22341.1460091017. The cubic root of 499126805 is about 793.2382198701.

The spelling of 499126805 in words is "four hundred ninety-nine million, one hundred twenty-six thousand, eight hundred five".