9640229 has 4 divisors (see below), whose sum is σ = 9646560. Its totient is φ = 9633900.

The previous prime is 9640219. The next prime is 9640231. The reversal of 9640229 is 9220469.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9220469 = 179 ⋅51511.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9640229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9640195 and 9640204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9640219) 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, 662 + ... + 4440.

It is an arithmetic number, because the mean of its divisors is an integer number (2411640).

Almost surely, 2^9640229 is an apocalyptic number.

It is an amenable number.

9640229 is a deficient number, since it is larger than the sum of its proper divisors (6331).

9640229 is a wasteful number, since it uses less digits than its factorization.

9640229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6330.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 9640229 is about 3104.8718169999. The cubic root of 9640229 is about 212.8281729735.

The spelling of 9640229 in words is "nine million, six hundred forty thousand, two hundred twenty-nine".