99984556 has 12 divisors (see below), whose sum is σ = 199969168. Its totient is φ = 42850512.

The previous prime is 99984541. The next prime is 99984559. The reversal of 99984556 is 65548999.

It is a happy number.

99984556 is an admirable number.

It is a super-2 number, since 2×99984556² = 19993822877034272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 99984497 and 99984506.

It is not an unprimeable number, because it can be changed into a prime (99984559) 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, 1785411 + ... + 1785466.

Almost surely, 2^99984556 is an apocalyptic number.

It is an amenable number.

99984556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

99984556 is a wasteful number, since it uses less digits than its factorization.

99984556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3570888 (or 3570886 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 55.

The square root of 99984556 is about 9999.2277701831. The cubic root of 99984556 is about 464.1349872317.

The spelling of 99984556 in words is "ninety-nine million, nine hundred eighty-four thousand, five hundred fifty-six".