9768409 has 4 divisors (see below), whose sum is σ = 11163904. Its totient is φ = 8372916.

The previous prime is 9768391. The next prime is 9768419. The reversal of 9768409 is 9048679.

9768409 is digitally balanced in base 2, base 3 and base 8, because in such bases it contains all the possibile digits an equal number of times.

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 an emirpimes, since its reverse is a distinct semiprime: 9048679 = 61 ⋅148339.

It is a cyclic number.

It is not a de Polignac number, because 9768409 - 2⁷ = 9768281 is a prime.

It is a Duffinian number.

9768409 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (9768419) 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, 697737 + ... + 697750.

It is an arithmetic number, because the mean of its divisors is an integer number (2790976).

Almost surely, 2^9768409 is an apocalyptic number.

It is an amenable number.

9768409 is a deficient number, since it is larger than the sum of its proper divisors (1395495).

9768409 is a wasteful number, since it uses less digits than its factorization.

9768409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395494.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 9768409 is about 3125.4454082578. The cubic root of 9768409 is about 213.7673031830.

The spelling of 9768409 in words is "nine million, seven hundred sixty-eight thousand, four hundred nine".