99986554 has 8 divisors (see below), whose sum is σ = 158802228. Its totient is φ = 47052480.

The previous prime is 99986539. The next prime is 99986597. The reversal of 99986554 is 45568999.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 86918329 + 13068225 = 9323^2 + 3615^2 .

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

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 99986495 and 99986504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1470357 + ... + 1470424.

Almost surely, 2^99986554 is an apocalyptic number.

99986554 is a deficient number, since it is larger than the sum of its proper divisors (58815674).

99986554 is a wasteful number, since it uses less digits than its factorization.

99986554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2940800.

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

The square root of 99986554 is about 9999.3276773991. The cubic root of 99986554 is about 464.1380788276.

The spelling of 99986554 in words is "ninety-nine million, nine hundred eighty-six thousand, five hundred fifty-four".