99894787868 has 12 divisors (see below), whose sum is σ = 174877087392. Its totient is φ = 49929905760.

The previous prime is 99894787859. The next prime is 99894787873. The reversal of 99894787868 is 86878749899.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4359188 + ... + 4382043.

It is an arithmetic number, because the mean of its divisors is an integer number (14573090616).

Almost surely, 2^99894787868 is an apocalyptic number.

It is an amenable number.

99894787868 is a deficient number, since it is larger than the sum of its proper divisors (74982299524).

99894787868 is a wasteful number, since it uses less digits than its factorization.

99894787868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8744092 (or 8744090 counting only the distinct ones).

The product of its digits is 3511517184, while the sum is 83.

The spelling of 99894787868 in words is "ninety-nine billion, eight hundred ninety-four million, seven hundred eighty-seven thousand, eight hundred sixty-eight".