9655421 has 2 divisors, whose sum is σ = 9655422. Its totient is φ = 9655420.

The previous prime is 9655411. The next prime is 9655447. The reversal of 9655421 is 1245569.

It is a happy number.

9655421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7778521 + 1876900 = 2789^2 + 1370^2 .

It is a cyclic number.

It is not a de Polignac number, because 9655421 - 2¹⁰ = 9654397 is a prime.

It is a Chen prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9655411) 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 as a sum of consecutive naturals, namely, 4827710 + 4827711.

It is an arithmetic number, because the mean of its divisors is an integer number (4827711).

Almost surely, 2^9655421 is an apocalyptic number.

It is an amenable number.

9655421 is a deficient number, since it is larger than the sum of its proper divisors (1).

9655421 is an equidigital number, since it uses as much as digits as its factorization.

9655421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 32.

The square root of 9655421 is about 3107.3173317188. The cubic root of 9655421 is about 212.9399126651.

The spelling of 9655421 in words is "nine million, six hundred fifty-five thousand, four hundred twenty-one".