9969917 has 4 divisors (see below), whose sum is σ = 9997020. Its totient is φ = 9942816.

The previous prime is 9969913. The next prime is 9969919. The reversal of 9969917 is 7199699.

9969917 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.

It can be written as a sum of positive squares in 2 ways, for example, as 5885476 + 4084441 = 2426^2 + 2021^2 .

It is a cyclic number.

It is not a de Polignac number, because 9969917 - 2² = 9969913 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 (9969913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12992 + ... + 13737.

It is an arithmetic number, because the mean of its divisors is an integer number (2499255).

Almost surely, 2^9969917 is an apocalyptic number.

It is an amenable number.

9969917 is a deficient number, since it is larger than the sum of its proper divisors (27103).

9969917 is a wasteful number, since it uses less digits than its factorization.

9969917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27102.

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

The square root of 9969917 is about 3157.5175375602. The cubic root of 9969917 is about 215.2272124739.

The spelling of 9969917 in words is "nine million, nine hundred sixty-nine thousand, nine hundred seventeen".