97297209 has 12 divisors (see below), whose sum is σ = 140714496. Its totient is φ = 64784472.

The previous prime is 97297201. The next prime is 97297229. The reversal of 97297209 is 90279279.

It is not a de Polignac number, because 97297209 - 2³ = 97297201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97297201) 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, 1504 + ... + 14030.

It is an arithmetic number, because the mean of its divisors is an integer number (11726208).

Almost surely, 2^97297209 is an apocalyptic number.

It is an amenable number.

97297209 is a deficient number, since it is larger than the sum of its proper divisors (43417287).

97297209 is a wasteful number, since it uses less digits than its factorization.

97297209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13396 (or 13393 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 97297209 is about 9863.9347625580. The cubic root of 97297209 is about 459.9388844451.

The spelling of 97297209 in words is "ninety-seven million, two hundred ninety-seven thousand, two hundred nine".