9659440 has 80 divisors (see below), whose sum is σ = 26284032. Its totient is φ = 3232512.

The previous prime is 9659423. The next prime is 9659453. The reversal of 9659440 is 449569.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×9659440² = 186609562227200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9659440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26137 + ... + 26503.

Almost surely, 2^9659440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9659440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13142016).

9659440 is an abundant number, since it is smaller than the sum of its proper divisors (16624592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9659440 is a wasteful number, since it uses less digits than its factorization.

9659440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 9659440 is about 3107.9639637550. The cubic root of 9659440 is about 212.9694534725.

It can be divided in two parts, 96 and 59440, that added together give a square (59536 = 244²).

The spelling of 9659440 in words is "nine million, six hundred fifty-nine thousand, four hundred forty".