973209 has 4 divisors (see below), whose sum is σ = 1297616. Its totient is φ = 648804.

The previous prime is 973187. The next prime is 973213. The reversal of 973209 is 902379.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 973209 - 2⁵ = 973177 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 973209.

It is not an unprimeable number, because it can be changed into a prime (973279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162199 + ... + 162204.

It is an arithmetic number, because the mean of its divisors is an integer number (324404).

2⁹⁷³²⁰⁹ is an apocalyptic number.

It is an amenable number.

973209 is a deficient number, since it is larger than the sum of its proper divisors (324407).

973209 is a wasteful number, since it uses less digits than its factorization.

973209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324406.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 973209 is about 986.5135579403. The cubic root of 973209 is about 99.0988707184.

The spelling of 973209 in words is "nine hundred seventy-three thousand, two hundred nine".