99555841 has 16 divisors (see below), whose sum is σ = 124351488. Its totient is φ = 77432400.

The previous prime is 99555821. The next prime is 99555851. The reversal of 99555841 is 14855599.

It is a cyclic number.

It is not a de Polignac number, because 99555841 - 2¹¹ = 99553793 is a prime.

It is a super-2 number, since 2×99555841² = 19822730954434562, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99555791 and 99555800.

It is not an unprimeable number, because it can be changed into a prime (99555821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62586 + ... + 64156.

It is an arithmetic number, because the mean of its divisors is an integer number (7771968).

Almost surely, 2^99555841 is an apocalyptic number.

99555841 is the 5761-st octagonal number.

It is an amenable number.

99555841 is a deficient number, since it is larger than the sum of its proper divisors (24795647).

99555841 is a wasteful number, since it uses less digits than its factorization.

99555841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2412.

The product of its digits is 324000, while the sum is 46.

The square root of 99555841 is about 9977.7673354313. The cubic root of 99555841 is about 463.4706622698.

It can be divided in two parts, 995558 and 41, that added together give a palindrome (995599).

The spelling of 99555841 in words is "ninety-nine million, five hundred fifty-five thousand, eight hundred forty-one".