9690409 has 4 divisors (see below), whose sum is σ = 9799380. Its totient is φ = 9581440.

The previous prime is 9690407. The next prime is 9690419. The reversal of 9690409 is 9040969.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9040969 = 7 ⋅1291567.

It can be written as a sum of positive squares in 2 ways, for example, as 4214809 + 5475600 = 2053^2 + 2340^2 .

It is a cyclic number.

It is not a de Polignac number, because 9690409 - 2¹ = 9690407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9690407) 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, 54352 + ... + 54529.

It is an arithmetic number, because the mean of its divisors is an integer number (2449845).

Almost surely, 2^9690409 is an apocalyptic number.

It is an amenable number.

9690409 is a deficient number, since it is larger than the sum of its proper divisors (108971).

9690409 is a wasteful number, since it uses less digits than its factorization.

9690409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108970.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 9690409 is about 3112.9421774264. The cubic root of 9690409 is about 213.1968101655.

The spelling of 9690409 in words is "nine million, six hundred ninety thousand, four hundred nine".