499800019 has 4 divisors (see below), whose sum is σ = 501874120. Its totient is φ = 497725920.

The previous prime is 499800001. The next prime is 499800029. The reversal of 499800019 is 910008994.

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 499800019 - 2⁵ = 499799987 is a prime.

It is a super-2 number, since 2×499800019² = 499600117984800722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499800029) 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, 1036689 + ... + 1037170.

It is an arithmetic number, because the mean of its divisors is an integer number (125468530).

Almost surely, 2^499800019 is an apocalyptic number.

499800019 is a deficient number, since it is larger than the sum of its proper divisors (2074101).

499800019 is a wasteful number, since it uses less digits than its factorization.

499800019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074100.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 499800019 is about 22356.2076166777. The cubic root of 499800019 is about 793.5946951902.

The spelling of 499800019 in words is "four hundred ninety-nine million, eight hundred thousand, nineteen".