9966239 has 8 divisors (see below), whose sum is σ = 10448592. Its totient is φ = 9495360.

The previous prime is 9966223. The next prime is 9966251. The reversal of 9966239 is 9326699.

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

It is a cyclic number.

It is not a de Polignac number, because 9966239 - 2⁴ = 9966223 is a prime.

It is a Duffinian number.

It is a zygodrome in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 9966239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9966259) 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 7 ways as a sum of consecutive naturals, for example, 1064 + ... + 4589.

It is an arithmetic number, because the mean of its divisors is an integer number (1306074).

Almost surely, 2^9966239 is an apocalyptic number.

9966239 is a deficient number, since it is larger than the sum of its proper divisors (482353).

9966239 is a wasteful number, since it uses less digits than its factorization.

9966239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5737.

The product of its digits is 157464, while the sum is 44.

The square root of 9966239 is about 3156.9350642672. The cubic root of 9966239 is about 215.2007427433.

The spelling of 9966239 in words is "nine million, nine hundred sixty-six thousand, two hundred thirty-nine".