9000997 has 2 divisors, whose sum is σ = 9000998.
Its totient is φ = 9000996.
The previous prime is 9000989. The next prime is 9001001. The reversal of 9000997 is 7990009.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 8473921 + 527076 = 2911^2 + 726^2
It is a cyclic number.
It is not a de Polignac number, because 9000997 - 23 = 9000989 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (9000907) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4500498 + 4500499.
It is an arithmetic number, because the mean of its divisors is an integer number (4500499).
Almost surely, 29000997 is an apocalyptic number.
It is an amenable number.
9000997 is a deficient number, since it is larger than the sum of its proper divisors (1).
9000997 is an equidigital number, since it uses as much as digits as its factorization.
9000997 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 5103, while the sum is 34.
The square root of 9000997 is about 3000.1661620650.
The cubic root of 9000997 is about 208.0160629237.
The spelling of 9000997 in words is "nine million, nine hundred ninety-seven", and thus it is an aban number.