499678091 has 24 divisors (see below), whose sum is σ = 572421360. Its totient is φ = 435314880.

The previous prime is 499678079. The next prime is 499678121. The reversal of 499678091 is 190876994.

It is a happy number.

It is not a de Polignac number, because 499678091 - 2¹⁴ = 499661707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499678051) 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 23 ways as a sum of consecutive naturals, for example, 550460 + ... + 551366.

It is an arithmetic number, because the mean of its divisors is an integer number (23850890).

Almost surely, 2^499678091 is an apocalyptic number.

499678091 is a deficient number, since it is larger than the sum of its proper divisors (72743269).

499678091 is a wasteful number, since it uses less digits than its factorization.

499678091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115 (or 1104 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 499678091 is about 22353.4805119919. The cubic root of 499678091 is about 793.5301565215.

The spelling of 499678091 in words is "four hundred ninety-nine million, six hundred seventy-eight thousand, ninety-one".