9643121 has 4 divisors (see below), whose sum is σ = 9731700. Its totient is φ = 9554544.

The previous prime is 9643079. The next prime is 9643129. The reversal of 9643121 is 1213469.

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 8042896 + 1600225 = 2836^2 + 1265^2 .

It is a cyclic number.

It is not a de Polignac number, because 9643121 - 2⁶ = 9643057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9643129) 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, 44126 + ... + 44343.

It is an arithmetic number, because the mean of its divisors is an integer number (2432925).

Almost surely, 2^9643121 is an apocalyptic number.

It is an amenable number.

9643121 is a deficient number, since it is larger than the sum of its proper divisors (88579).

9643121 is a wasteful number, since it uses less digits than its factorization.

9643121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88578.

The product of its digits is 1296, while the sum is 26.

The square root of 9643121 is about 3105.3375017862. The cubic root of 9643121 is about 212.8494531574.

The spelling of 9643121 in words is "nine million, six hundred forty-three thousand, one hundred twenty-one".