9691397 has 4 divisors (see below), whose sum is σ = 9702240. Its totient is φ = 9680556.

The previous prime is 9691393. The next prime is 9691403. The reversal of 9691397 is 7931969.

It is a happy number.

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: 7931969 = 337 ⋅23537.

It is a cyclic number.

It is not a de Polignac number, because 9691397 - 2² = 9691393 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 (9691393) 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, 3947 + ... + 5912.

It is an arithmetic number, because the mean of its divisors is an integer number (2425560).

Almost surely, 2^9691397 is an apocalyptic number.

It is an amenable number.

9691397 is a deficient number, since it is larger than the sum of its proper divisors (10843).

9691397 is an equidigital number, since it uses as much as digits as its factorization.

9691397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10842.

The product of its digits is 91854, while the sum is 44.

The square root of 9691397 is about 3113.1008656965. The cubic root of 9691397 is about 213.2040555181.

The spelling of 9691397 in words is "nine million, six hundred ninety-one thousand, three hundred ninety-seven".