9609961 has 4 divisors (see below), whose sum is σ = 9644932. Its totient is φ = 9574992.

The previous prime is 9609959. The next prime is 9610033. The reversal of 9609961 is 1699069.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3825936 + 5784025 = 1956^2 + 2405^2 .

It is a cyclic number.

It is not a de Polignac number, because 9609961 - 2¹ = 9609959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9609911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17070 + ... + 17623.

It is an arithmetic number, because the mean of its divisors is an integer number (2411233).

Almost surely, 2^9609961 is an apocalyptic number.

It is an amenable number.

9609961 is a deficient number, since it is larger than the sum of its proper divisors (34971).

9609961 is a wasteful number, since it uses less digits than its factorization.

9609961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34970.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 9609961 is about 3099.9937096710. The cubic root of 9609961 is about 212.6051963577.

It can be divided in two parts, 9 and 609961, that multiplied together give a square (5489649 = 2343²).

The spelling of 9609961 in words is "nine million, six hundred nine thousand, nine hundred sixty-one".