9999169 has 4 divisors (see below), whose sum is σ = 10008880. Its totient is φ = 9989460.

The previous prime is 9999167. The next prime is 9999193. The reversal of 9999169 is 9619999.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9619999 = 317 ⋅30347.

It is a cyclic number.

It is not a de Polignac number, because 9999169 - 2¹ = 9999167 is a prime.

It is a super-2 number, since 2×9999169² = 199966761381122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9999161) 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, 3099 + ... + 5440.

It is an arithmetic number, because the mean of its divisors is an integer number (2502220).

Almost surely, 2^9999169 is an apocalyptic number.

It is an amenable number.

9999169 is a deficient number, since it is larger than the sum of its proper divisors (9711).

9999169 is a wasteful number, since it uses less digits than its factorization.

9999169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9710.

The product of its digits is 354294, while the sum is 52.

The square root of 9999169 is about 3162.1462648018. The cubic root of 9999169 is about 215.4375010538.

The spelling of 9999169 in words is "nine million, nine hundred ninety-nine thousand, one hundred sixty-nine".