9719897 has 4 divisors (see below), whose sum is σ = 10603536. Its totient is φ = 8836260.

The previous prime is 9719893. The next prime is 9719909. The reversal of 9719897 is 7989179.

9719897 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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: 7989179 = 11 ⋅726289.

It is a cyclic number.

It is not a de Polignac number, because 9719897 - 2² = 9719893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9719893) 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, 441803 + ... + 441824.

It is an arithmetic number, because the mean of its divisors is an integer number (2650884).

Almost surely, 2^9719897 is an apocalyptic number.

It is an amenable number.

9719897 is a deficient number, since it is larger than the sum of its proper divisors (883639).

9719897 is a wasteful number, since it uses less digits than its factorization.

9719897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883638.

The product of its digits is 285768, while the sum is 50.

The square root of 9719897 is about 3117.6749349475. The cubic root of 9719897 is about 213.4128444396.

The spelling of 9719897 in words is "nine million, seven hundred nineteen thousand, eight hundred ninety-seven".