97317289 has 4 divisors (see below), whose sum is σ = 99947524. Its totient is φ = 94687056.

The previous prime is 97317263. The next prime is 97317377. The reversal of 97317289 is 98271379.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69438889 + 27878400 = 8333^2 + 5280^2 .

It is a cyclic number.

It is not a de Polignac number, because 97317289 - 2⁵ = 97317257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97317229) 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, 1315062 + ... + 1315135.

It is an arithmetic number, because the mean of its divisors is an integer number (24986881).

Almost surely, 2^97317289 is an apocalyptic number.

It is an amenable number.

97317289 is a deficient number, since it is larger than the sum of its proper divisors (2630235).

97317289 is a wasteful number, since it uses less digits than its factorization.

97317289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630234.

The product of its digits is 190512, while the sum is 46.

The square root of 97317289 is about 9864.9525594399. The cubic root of 97317289 is about 459.9705226858.

It can be divided in two parts, 9731 and 7289, that added together give a triangular number (17020 = T₁₈₄).

The spelling of 97317289 in words is "ninety-seven million, three hundred seventeen thousand, two hundred eighty-nine".