99878796 has 18 divisors (see below), whose sum is σ = 252471492. Its totient is φ = 33292920.

The previous prime is 99878773. The next prime is 99878827. The reversal of 99878796 is 69787899.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1387170 + ... + 1387241.

It is an arithmetic number, because the mean of its divisors is an integer number (14026194).

Almost surely, 2^99878796 is an apocalyptic number.

It is an amenable number.

99878796 is an abundant number, since it is smaller than the sum of its proper divisors (152592696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99878796 is a wasteful number, since it uses less digits than its factorization.

99878796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2774421 (or 2774416 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 63.

The square root of 99878796 is about 9993.9379625851. The cubic root of 99878796 is about 463.9712811694.

The spelling of 99878796 in words is "ninety-nine million, eight hundred seventy-eight thousand, seven hundred ninety-six".