99840441 has 8 divisors (see below), whose sum is σ = 133223040.
Its totient is φ = 66509072.
The previous prime is 99840409. The next prime is 99840443. The reversal of 99840441 is 14404899.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 99840441 - 25 = 99840409 is a prime.
It is a super-2 number, since 2×998404412 = 19936227318148962, which contains 22 as substring.
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 99840441.
It is not an unprimeable number, because it can be changed into a prime (99840443) by changing a digit.
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 7 ways as a sum of consecutive naturals, for example, 8001 + ... + 16238.
It is an arithmetic number, because the mean of its divisors is an integer number (16652880).
Almost surely, 299840441 is an apocalyptic number.
It is an amenable number.
99840441 is a deficient number, since it is larger than the sum of its proper divisors (33382599).
99840441 is a wasteful number, since it uses less digits than its factorization.
99840441 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 25615.
The product of its (nonzero) digits is 41472, while the sum is 39.
The square root of 99840441 is about 9992.0188650743.
The cubic root of 99840441 is about 463.9118828532.
The spelling of 99840441 in words is "ninety-nine million, eight hundred forty thousand, four hundred forty-one".