97897117 has 4 divisors (see below), whose sum is σ = 99358336. Its totient is φ = 96435900.

The previous prime is 97897103. The next prime is 97897123. The reversal of 97897117 is 71179879.

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 a cyclic number.

It is not a de Polignac number, because 97897117 - 2²³ = 89508509 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 (97897147) 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, 730509 + ... + 730642.

It is an arithmetic number, because the mean of its divisors is an integer number (24839584).

Almost surely, 2^97897117 is an apocalyptic number.

It is an amenable number.

97897117 is a deficient number, since it is larger than the sum of its proper divisors (1461219).

97897117 is a wasteful number, since it uses less digits than its factorization.

97897117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461218.

The product of its digits is 222264, while the sum is 49.

The square root of 97897117 is about 9894.2971958598. The cubic root of 97897117 is about 460.8822341025.

The spelling of 97897117 in words is "ninety-seven million, eight hundred ninety-seven thousand, one hundred seventeen".