99804878 has 8 divisors (see below), whose sum is σ = 150604272. Its totient is φ = 49603456.

The previous prime is 99804827. The next prime is 99804893. The reversal of 99804878 is 87840899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×99804878² = 19922027345189768, which contains 22 as substring.

99804878 is a modest number, since divided by 4878 gives 998 as remainder.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 149075 + ... + 149742.

It is an arithmetic number, because the mean of its divisors is an integer number (18825534).

Almost surely, 2^99804878 is an apocalyptic number.

99804878 is a deficient number, since it is larger than the sum of its proper divisors (50799394).

99804878 is a wasteful number, since it uses less digits than its factorization.

99804878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298986.

The product of its (nonzero) digits is 1161216, while the sum is 53.

The square root of 99804878 is about 9990.2391362770. The cubic root of 99804878 is about 463.8567947634.

The spelling of 99804878 in words is "ninety-nine million, eight hundred four thousand, eight hundred seventy-eight".