499689843 has 4 divisors (see below), whose sum is σ = 666253128. Its totient is φ = 333126560.

The previous prime is 499689811. The next prime is 499689859. The reversal of 499689843 is 348986994.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 499689843 - 2⁵ = 499689811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (499689803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83281638 + ... + 83281643.

It is an arithmetic number, because the mean of its divisors is an integer number (166563282).

Almost surely, 2^499689843 is an apocalyptic number.

499689843 is a deficient number, since it is larger than the sum of its proper divisors (166563285).

499689843 is a wasteful number, since it uses less digits than its factorization.

499689843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166563284.

The product of its digits is 13436928, while the sum is 60.

The square root of 499689843 is about 22353.7433777880. The cubic root of 499689843 is about 793.5363775222.

The spelling of 499689843 in words is "four hundred ninety-nine million, six hundred eighty-nine thousand, eight hundred forty-three".