996009 has 16 divisors (see below), whose sum is σ = 1554432. Its totient is φ = 555408.

The previous prime is 996001. The next prime is 996011. The reversal of 996009 is 900699.

It is not a de Polignac number, because 996009 - 2³ = 996001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (996001) 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 15 ways as a sum of consecutive naturals, for example, 352 + ... + 1454.

It is an arithmetic number, because the mean of its divisors is an integer number (97152).

2⁹⁹⁶⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

996009 is a deficient number, since it is larger than the sum of its proper divisors (558423).

996009 is a wasteful number, since it uses less digits than its factorization.

996009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156.

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 996009 is about 998.0025050069. The cubic root of 996009 is about 99.8667892945.

The spelling of 996009 in words is "nine hundred ninety-six thousand, nine".