9699917 has 2 divisors, whose sum is σ = 9699918. Its totient is φ = 9699916.

The previous prime is 9699913. The next prime is 9699919. The reversal of 9699917 is 7199969.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8213956 + 1485961 = 2866^2 + 1219^2 .

It is a cyclic number.

It is not a de Polignac number, because 9699917 - 2² = 9699913 is a prime.

Together with 9699919, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9699913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4849958 + 4849959.

It is an arithmetic number, because the mean of its divisors is an integer number (4849959).

Almost surely, 2^9699917 is an apocalyptic number.

It is an amenable number.

9699917 is a deficient number, since it is larger than the sum of its proper divisors (1).

9699917 is an equidigital number, since it uses as much as digits as its factorization.

9699917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 275562, while the sum is 50.

The square root of 9699917 is about 3114.4689756040. The cubic root of 9699917 is about 213.2665152612.

The spelling of 9699917 in words is "nine million, six hundred ninety-nine thousand, nine hundred seventeen".