997009 has 8 divisors (see below), whose sum is σ = 1081472. Its totient is φ = 913680.

The previous prime is 997001. The next prime is 997013. The reversal of 997009 is 900799.

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 997009 - 2³ = 997001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997001) 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 7 ways as a sum of consecutive naturals, for example, 3382 + ... + 3664.

It is an arithmetic number, because the mean of its divisors is an integer number (135184).

2⁹⁹⁷⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

997009 is a deficient number, since it is larger than the sum of its proper divisors (84463).

997009 is a wasteful number, since it uses less digits than its factorization.

997009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567.

The product of its (nonzero) digits is 5103, while the sum is 34.

The square root of 997009 is about 998.5033800644. The cubic root of 997009 is about 99.9002004336.

The spelling of 997009 in words is "nine hundred ninety-seven thousand, nine".