97995997 has 4 divisors (see below), whose sum is σ = 106904736. Its totient is φ = 89087260.

The previous prime is 97995983. The next prime is 97996001. The reversal of 97995997 is 79959979.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79959979 = 11 ⋅7269089.

It is a cyclic number.

It is not a de Polignac number, because 97995997 - 2¹¹ = 97993949 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 (97995907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4454353 + ... + 4454374.

It is an arithmetic number, because the mean of its divisors is an integer number (26726184).

Almost surely, 2^97995997 is an apocalyptic number.

It is an amenable number.

97995997 is a deficient number, since it is larger than the sum of its proper divisors (8908739).

97995997 is a wasteful number, since it uses less digits than its factorization.

97995997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8908738.

The product of its digits is 14467005, while the sum is 64.

The square root of 97995997 is about 9899.2927525152. The cubic root of 97995997 is about 461.0373517134.

The spelling of 97995997 in words is "ninety-seven million, nine hundred ninety-five thousand, nine hundred ninety-seven".