99998866 has 8 divisors (see below), whose sum is σ = 163634544. Its totient is φ = 45454020.

The previous prime is 99998851. The next prime is 99998869. The reversal of 99998866 is 66889999.

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

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 99998798 and 99998807.

It is not an unprimeable number, because it can be changed into a prime (99998869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2272680 + ... + 2272723.

It is an arithmetic number, because the mean of its divisors is an integer number (20454318).

Almost surely, 2^99998866 is an apocalyptic number.

99998866 is a deficient number, since it is larger than the sum of its proper divisors (63635678).

99998866 is a wasteful number, since it uses less digits than its factorization.

99998866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4545416.

The product of its digits is 15116544, while the sum is 64.

The square root of 99998866 is about 9999.9432998393. The cubic root of 99998866 is about 464.1571288341.

The spelling of 99998866 in words is "ninety-nine million, nine hundred ninety-eight thousand, eight hundred sixty-six".