9659409 has 16 divisors (see below), whose sum is σ = 13305600. Its totient is φ = 6230016.

The previous prime is 9659389. The next prime is 9659423. The reversal of 9659409 is 9049569.

It is a happy number.

It is not a de Polignac number, because 9659409 - 2¹⁶ = 9593873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9659509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12177 + ... + 12945.

It is an arithmetic number, because the mean of its divisors is an integer number (831600).

Almost surely, 2^9659409 is an apocalyptic number.

It is an amenable number.

9659409 is a deficient number, since it is larger than the sum of its proper divisors (3646191).

9659409 is a wasteful number, since it uses less digits than its factorization.

9659409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 9659409 is about 3107.9589765632. The cubic root of 9659409 is about 212.9692256450.

The spelling of 9659409 in words is "nine million, six hundred fifty-nine thousand, four hundred nine".