9640369 has 4 divisors (see below), whose sum is σ = 9725796. Its totient is φ = 9554944.

The previous prime is 9640363. The next prime is 9640373. The reversal of 9640369 is 9630469.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9630469 = 269 ⋅35801.

It can be written as a sum of positive squares in 2 ways, for example, as 5230369 + 4410000 = 2287^2 + 2100^2 .

It is a cyclic number.

It is not a de Polignac number, because 9640369 - 2³ = 9640361 is a prime.

It is a super-2 number, since 2×9640369² = 185873428912322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9640361) 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, 42544 + ... + 42769.

It is an arithmetic number, because the mean of its divisors is an integer number (2431449).

Almost surely, 2^9640369 is an apocalyptic number.

It is an amenable number.

9640369 is a deficient number, since it is larger than the sum of its proper divisors (85427).

9640369 is a wasteful number, since it uses less digits than its factorization.

9640369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85426.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 9640369 is about 3104.8943621321. The cubic root of 9640369 is about 212.8292032325.

The spelling of 9640369 in words is "nine million, six hundred forty thousand, three hundred sixty-nine".