999801 has 12 divisors (see below), whose sum is σ = 1575600.
Its totient is φ = 605880.
The previous prime is 999773. The next prime is 999809. The reversal of 999801 is 108999.
It can be divided in two parts, 99 and 9801, that multiplied together give a cube (970299 = 993).
It is not a de Polignac number, because 999801 - 25 = 999769 is a prime.
999801 is a modest number, since divided by 9801 gives 99 as remainder.
It is a Curzon number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 999801.
It is not an unprimeable number, because it can be changed into a prime (999809) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4951 + ... + 5148.
It is an arithmetic number, because the mean of its divisors is an integer number (131300).
2999801 is an apocalyptic number.
It is an amenable number.
999801 is a deficient number, since it is larger than the sum of its proper divisors (575799).
999801 is a wasteful number, since it uses less digits than its factorization.
999801 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10116 (or 10113 counting only the distinct ones).
The product of its (nonzero) digits is 5832, while the sum is 36.
The square root of 999801 is about 999.9004950494.
The cubic root of 999801 is about 99.9933662266.
The spelling of 999801 in words is "nine hundred ninety-nine thousand, eight hundred one".