9642239 has 8 divisors (see below), whose sum is σ = 10024560. Its totient is φ = 9263296.

The previous prime is 9642233. The next prime is 9642251. The reversal of 9642239 is 9322469.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9642239 - 2⁴ = 9642223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9642199 and 9642208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9642233) 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 in 7 ways as a sum of consecutive naturals, for example, 6044 + ... + 7470.

It is an arithmetic number, because the mean of its divisors is an integer number (1253070).

Almost surely, 2^9642239 is an apocalyptic number.

9642239 is a deficient number, since it is larger than the sum of its proper divisors (382321).

9642239 is a wasteful number, since it uses less digits than its factorization.

9642239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689.

The product of its digits is 23328, while the sum is 35.

The square root of 9642239 is about 3105.1954849896. The cubic root of 9642239 is about 212.8429635938.

The spelling of 9642239 in words is "nine million, six hundred forty-two thousand, two hundred thirty-nine".