99868860 has 324 divisors, whose sum is σ = 387282168. Its totient is φ = 20756736.

The previous prime is 99868849. The next prime is 99868861. The reversal of 99868860 is 6886899.

It is a junction number, because it is equal to n+sod(n) for n = 99868797 and 99868806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99868861) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1490547 + ... + 1490613.

Almost surely, 2^99868860 is an apocalyptic number.

99868860 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99868860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193641084).

99868860 is an abundant number, since it is smaller than the sum of its proper divisors (287413308).

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

99868860 is a wasteful number, since it uses less digits than its factorization.

99868860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 99868860 is about 9993.4408488768. The cubic root of 99868860 is about 463.9558952827.

The spelling of 99868860 in words is "ninety-nine million, eight hundred sixty-eight thousand, eight hundred sixty".