9655440 has 40 divisors (see below), whose sum is σ = 29932608. Its totient is φ = 2574720.

The previous prime is 9655421. The next prime is 9655447. The reversal of 9655440 is 445569.

It is a tau number, because it is divible by the number of its divisors (40).

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9655447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19876 + ... + 20355.

Almost surely, 2^9655440 is an apocalyptic number.

It is an amenable number.

9655440 is an abundant number, since it is smaller than the sum of its proper divisors (20277168).

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

9655440 is a wasteful number, since it uses less digits than its factorization.

9655440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40247 (or 40241 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 9655440 is about 3107.3203890169. The cubic root of 9655440 is about 212.9400523399.

The spelling of 9655440 in words is "nine million, six hundred fifty-five thousand, four hundred forty".