9664169 has 4 divisors (see below), whose sum is σ = 9822660. Its totient is φ = 9505680.

The previous prime is 9664153. The next prime is 9664183. The reversal of 9664169 is 9614669.

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 5583769 + 4080400 = 2363^2 + 2020^2 .

It is a cyclic number.

It is not a de Polignac number, because 9664169 - 2⁴ = 9664153 is a prime.

It is a super-2 number, since 2×9664169² = 186792324921122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9664129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79154 + ... + 79275.

It is an arithmetic number, because the mean of its divisors is an integer number (2455665).

Almost surely, 2^9664169 is an apocalyptic number.

It is an amenable number.

9664169 is a deficient number, since it is larger than the sum of its proper divisors (158491).

9664169 is a wasteful number, since it uses less digits than its factorization.

9664169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158490.

The product of its digits is 69984, while the sum is 41.

The square root of 9664169 is about 3108.7246581195. The cubic root of 9664169 is about 213.0042024930.

The spelling of 9664169 in words is "nine million, six hundred sixty-four thousand, one hundred sixty-nine".