97991293 has 8 divisors (see below), whose sum is σ = 102364416. Its totient is φ = 93627600.

The previous prime is 97991291. The next prime is 97991317. The reversal of 97991293 is 39219979.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97991293 - 2¹ = 97991291 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97991291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26583 + ... + 30043.

It is an arithmetic number, because the mean of its divisors is an integer number (12795552).

Almost surely, 2^97991293 is an apocalyptic number.

It is an amenable number.

97991293 is a deficient number, since it is larger than the sum of its proper divisors (4373123).

97991293 is a wasteful number, since it uses less digits than its factorization.

97991293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4715.

The product of its digits is 275562, while the sum is 49.

The square root of 97991293 is about 9899.0551569329. The cubic root of 97991293 is about 461.0299746964.

The spelling of 97991293 in words is "ninety-seven million, nine hundred ninety-one thousand, two hundred ninety-three".