99800019 has 40 divisors (see below), whose sum is σ = 164395440. Its totient is φ = 59832000.

The previous prime is 99800011. The next prime is 99800023. The reversal of 99800019 is 91000899.

It is not a de Polignac number, because 99800019 - 2³ = 99800011 is a prime.

It is a super-2 number, since 2×99800019² = 19920087584800722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99800011) 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 39 ways as a sum of consecutive naturals, for example, 89437 + ... + 90545.

It is an arithmetic number, because the mean of its divisors is an integer number (4109886).

Almost surely, 2^99800019 is an apocalyptic number.

99800019 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

99800019 is a deficient number, since it is larger than the sum of its proper divisors (64595421).

99800019 is a wasteful number, since it uses less digits than its factorization.

99800019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233 (or 1224 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 99800019 is about 9989.9959459451. The cubic root of 99800019 is about 463.8492670193.

The spelling of 99800019 in words is "ninety-nine million, eight hundred thousand, nineteen".