99999868 has 6 divisors (see below), whose sum is σ = 174999776. Its totient is φ = 49999932.

The previous prime is 99999847. The next prime is 99999931. The reversal of 99999868 is 86899999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12499980 + ... + 12499987.

Almost surely, 2^99999868 is an apocalyptic number.

It is an amenable number.

99999868 is a deficient number, since it is larger than the sum of its proper divisors (74999908).

99999868 is a wasteful number, since it uses less digits than its factorization.

99999868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24999971 (or 24999969 counting only the distinct ones).

The product of its digits is 22674816, while the sum is 67.

The square root of 99999868 is about 9999.9933999978. The cubic root of 99999868 is about 464.1586791313.

The spelling of 99999868 in words is "ninety-nine million, nine hundred ninety-nine thousand, eight hundred sixty-eight".