9942239 has 8 divisors (see below), whose sum is σ = 10214400. Its totient is φ = 9672696.

The previous prime is 9942223. The next prime is 9942269. The reversal of 9942239 is 9322499.

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 9942239 - 2⁴ = 9942223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9942269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8822 + ... + 9884.

It is an arithmetic number, because the mean of its divisors is an integer number (1276800).

Almost surely, 2^9942239 is an apocalyptic number.

9942239 is a deficient number, since it is larger than the sum of its proper divisors (272161).

9942239 is a wasteful number, since it uses less digits than its factorization.

9942239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309.

The product of its digits is 34992, while the sum is 38.

The square root of 9942239 is about 3153.1316179316. The cubic root of 9942239 is about 215.0278600998.

The spelling of 9942239 in words is "nine million, nine hundred forty-two thousand, two hundred thirty-nine".