9955009 has 2 divisors, whose sum is σ = 9955010.
Its totient is φ = 9955008.
The previous prime is 9955003. The next prime is 9955073. The reversal of 9955009 is 9005599.
It is a happy number.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 8105409 + 1849600 = 2847^2 + 1360^2
It is a cyclic number.
It is not a de Polignac number, because 9955009 - 27 = 9954881 is a prime.
9955009 is a lucky number.
It is not a weakly prime, because it can be changed into another prime (9955003) 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 as a sum of consecutive naturals, namely, 4977504 + 4977505.
It is an arithmetic number, because the mean of its divisors is an integer number (4977505).
Almost surely, 29955009 is an apocalyptic number.
It is an amenable number.
9955009 is a deficient number, since it is larger than the sum of its proper divisors (1).
9955009 is an equidigital number, since it uses as much as digits as its factorization.
9955009 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 18225, while the sum is 37.
The square root of 9955009 is about 3155.1559390940.
The cubic root of 9955009 is about 215.1198826640.
The spelling of 9955009 in words is "nine million, nine hundred fifty-five thousand, nine".