97209 has 12 divisors (see below), whose sum is σ = 160576. Its totient is φ = 55512.

The previous prime is 97187. The next prime is 97213. The reversal of 97209 is 90279.

97209 = T₇₁ + T₇₂ + ... + T₉₇.

It is not a de Polignac number, because 97209 - 2⁵ = 97177 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 709 + ... + 834.

2⁹⁷²⁰⁹ is an apocalyptic number.

It is an amenable number.

97209 is a deficient number, since it is larger than the sum of its proper divisors (63367).

97209 is a wasteful number, since it uses less digits than its factorization.

97209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556 (or 1553 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 97209 is about 311.7835787850. The cubic root of 97209 is about 45.9799849914.

The spelling of 97209 in words is "ninety-seven thousand, two hundred nine".