99998856 has 24 divisors (see below), whose sum is σ = 270830430. Its totient is φ = 33332928.

The previous prime is 99998851. The next prime is 99998869. The reversal of 99998856 is 65889999.

It can be written as a sum of positive squares in only one way, i.e., 63202500 + 36796356 = 7950^2 + 6066^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 99998793 and 99998802.

It is not an unprimeable number, because it can be changed into a prime (99998851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 694365 + ... + 694508.

Almost surely, 2^99998856 is an apocalyptic number.

It is an amenable number.

99998856 is an abundant number, since it is smaller than the sum of its proper divisors (170831574).

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

99998856 is a wasteful number, since it uses less digits than its factorization.

99998856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388885 (or 1388878 counting only the distinct ones).

The product of its digits is 12597120, while the sum is 63.

The square root of 99998856 is about 9999.9427998364. The cubic root of 99998856 is about 464.1571133620.

The spelling of 99998856 in words is "ninety-nine million, nine hundred ninety-eight thousand, eight hundred fifty-six".